What Is Matter?
Bonus Multiplier: 2×
Question Type: One-Word Answer
Question: What are the tiny particles that make up matter called? (One word)
Correct Answer: Molecules
Bonus Score: 100 × 2 = 200 points
Bonus Multiplier: 4×
Question Type: Multiple Choice
Question: Which of these is a solid?
A. Milk
B. Helium
C. Rock
D. Air
Correct Answer: C. Rock
Bonus Score: 100 × 4 = 400 points
Bonus Multiplier: 5×
Question Type: True or False
Question: True or False? At room temperature, water is a gas.
Correct Answer: False
Bonus Score: 100 × 5 = 500 points
Bonus Multiplier: 4×
Question Type: Multiple Choice
Question: What is a pure substance?
A. A material made of only one kind of material
B. A mixture of two or more substances
C. A material that is always a solid
D. A material that always dissolves in water
Correct Answer: A. A material made of only one kind of material
Bonus Score: 100 × 4 = 400 points
Bonus Multiplier: 6×
Question Type: True or False
Question: True or False? In a solution, you cannot see the individual parts any more.
Correct Answer: True
Bonus Score: 100 × 6 = 600 points
Bonus Multiplier: 3×
Question Type: One-Word Answer
Question: Fog is made of tiny drops of which liquid? (One word)
Correct Answer: Water
Bonus Score: 100 × 3 = 300 points
Bonus Multiplier: 5×
Question Type: One-Word Answer
Question: What is the name of a mixture where larger particles settle when it is left standing? (One word)
Correct Answer: Suspension
Bonus Score: 100 × 5 = 500 points
Bonus Multiplier: 3×
Question Type: Fill in the Blank
Question: Fill in the blank: A heterogeneous mixture has different parts that you can ______.
Correct Answer: see
Bonus Score: 100 × 3 = 300 points
Bonus Multiplier: 5×
Question Type: Multiple Choice
Question: Which sentence is the best way to say what matter is?
A. Matter is anything that we can see with our eyes.
B. Matter is anything that is solid and heavy.
C. Matter is anything that has mass and takes up space.
D. Matter is anything that keeps its own shape.
Correct Answer: C. Matter is anything that has mass and takes up space.
Bonus Score: 200 × 5 = 1,000 points
Bonus Multiplier: 6×
Question Type: True or False
Question: True or False? A liquid has a fixed volume, but it does not have a fixed shape.
Correct Answer: True
Bonus Score: 200 × 6 = 1,200 points
Bonus Multiplier: 6×
Question Type: Multiple Choice
Question: Which one is the gas form of water?
A. Ice
B. Fog
C. Steam
D. Seawater
Correct Answer: C. Steam
Bonus Score: 200 × 6 = 1,200 points
Bonus Multiplier: 5×
Question Type: True or False
Question: True or False? Water (H₂O) is an element.
Correct Answer: False
Bonus Score: 200 × 5 = 1,000 points
Bonus Multiplier: 2×
Question Type: Multiple Choice
Question: Which one is a solution?
A. Sugar dissolved in water
B. Sand shaken in water
C. Muddy water left still
D. Salad dressing left standing
Correct Answer: A. Sugar dissolved in water
Bonus Score: 200 × 2 = 400 points
Bonus Multiplier: 4×
Question Type: True or False
Question: True or False? The particles in a colloid stay evenly spread out and do not settle over time.
Correct Answer: True
Bonus Score: 200 × 4 = 800 points
Bonus Multiplier: 4×
Question Type: Fill in the Blank
Question: Fill in the blank: Salad dressing is a suspension because the oil and vinegar will ______ if the bottle is left standing.
Correct Answer: separate
Bonus Score: 200 × 4 = 800 points
Bonus Multiplier: 6×
Question Type: One-Word Answer
Question: Which word means "the same all the way through"? (One word)
Correct Answer: Homogeneous
Bonus Score: 200 × 6 = 1,200 points
Bonus Multiplier: 6×
Question Type: True or False
Question: True or False? Air is not matter because we cannot see it.
Correct Answer: False
Bonus Score: 300 × 6 = 1,800 points
Bonus Multiplier: 3×
Question Type: Fill in the Blank
Question: Fill in the blank: The molecules in a gas are far apart and move ______ in all directions.
Correct Answer: freely
Bonus Score: 300 × 3 = 900 points
Question Type: Fill in the Blank
Question: Fill in the blank: When water is frozen, it becomes a ______ called ice.
Correct Answer: solid
Bonus Score: 300 × 2 = 600 points
Bonus Multiplier: 4×
Question Type: One-Word Answer
Question: What do we call a pure substance made of only one type of atom? (One word)
Correct Answer: Element
Bonus Score: 300 × 4 = 1,200 points
Bonus Multiplier: 5×
Question Type: One-Word Answer
Question: In a salt-water solution, what is the water called? (One word)
Correct Answer: Solvent
Bonus Score: 300 × 5 = 1,500 points
Bonus Multiplier: 2×
Question Type: Multiple Choice
Question: Which one is a colloid?
A. Sand in water
B. Milk
C. Muddy water
D. A snow globe
Correct Answer: B. Milk
Bonus Score: 300 × 2 = 600 points
Bonus Multiplier: 2×
Question Type: True or False
Question: True or False? Muddy water is a suspension.
Correct Answer: True
Bonus Score: 300 × 2 = 600 points
Bonus Multiplier: 4×
Question Type: Matching
Question: Match each word with its meaning.
List 1:
1. Homogeneous
2. Heterogeneous
3. Mixture
List 2:
A. Different parts that you can see
B. Two or more substances that are not chemically joined
C. The same all the way through
Correct Answer:
1 → C: Homogeneous = The same all the way through
2 → A: Heterogeneous = Different parts that you can see
3 → B: Mixture = Two or more substances that are not chemically joined
Bonus Score: 300 × 4 = 1,200 points
Bonus Multiplier: 5×
Question Type: Fill in the Blank
Question: Fill in the blank: Molecules are too small to see, but they are always ______.
Correct Answer: moving
Bonus Score: 400 × 5 = 2,000 points
Bonus Multiplier: 2×
Question Type: One-Word Answer
Question: Which state of matter has a fixed shape and a fixed volume? (One word)
Correct Answer: Solid
Bonus Score: 400 × 2 = 800 points
Bonus Multiplier: 5×
Question Type: Matching
Question: Match each form of water with its shape and volume.
List 1:
1. Ice cube
2. Water in a glass
3. Steam
List 2:
A. No fixed shape and no fixed volume
B. Fixed shape and fixed volume
C. Takes the shape of its container but has a fixed volume
Correct Answer:
1 → B: Ice cube = Fixed shape and fixed volume
2 → C: Water in a glass = Takes the shape of its container but has a fixed volume
3 → A: Steam = No fixed shape and no fixed volume
Bonus Score: 400 × 5 = 2,000 points
Bonus Multiplier: 3×
Question Type: Multiple Choice
Question: Why is air not a pure substance?
A. It is a mixture of gases, such as oxygen, nitrogen and carbon dioxide.
B. It is made of only one type of atom.
C. It cannot be seen, so it is not a substance.
D. It is a liquid, so it cannot be pure.
Correct Answer: A. It is a mixture of gases, such as oxygen, nitrogen and carbon dioxide.
Bonus Score: 400 × 3 = 1,200 points
Bonus Multiplier: 2×
Question Type: Matching
Question: Match each word with its meaning.
List 1:
1. Solution
2. Solvent
3. Solute
4. Homogeneous
List 2:
A. The substance that is dissolved
B. The same all the way through
C. A mixture where one substance dissolves in another
D. The substance that does the dissolving
Correct Answer:
1 → C: Solution = A mixture where one substance dissolves in another
2 → D: Solvent = The substance that does the dissolving
3 → A: Solute = The substance that is dissolved
4 → B: Homogeneous = The same all the way through
Bonus Score: 400 × 2 = 800 points
Bonus Multiplier: 4×
Question Type: Fill in the Blank
Question: Fill in the blank: In whipped cream, ______ is trapped in the cream, so it is fluffy and smooth.
Correct Answer: air
Bonus Score: 400 × 4 = 1,600 points
Bonus Multiplier: 3×
Question Type: Matching
Question: Match each suspension with what is mixed in it.
List 1:
1. Sand in water
2. Muddy water
3. Salad dressing
4. Snow globe
List 2:
A. Dirt
B. Oil and vinegar
C. Glitter
D. Sand
Correct Answer:
1 → D: Sand in water = Sand
2 → A: Muddy water = Dirt
3 → B: Salad dressing = Oil and vinegar
4 → C: Snow globe = Glitter
Bonus Score: 400 × 3 = 1,200 points
Bonus Multiplier: 6×
Question Type: One-Word Answer
Question: According to this lesson, is milk homogeneous or heterogeneous? (One word)
Correct Answer: Heterogeneous
Bonus Score: 400 × 6 = 2,400 points
Bonus Multiplier: 6×
Question Type: Multiple Choice
Question: A paper bag is full of air, so it looks puffed up and not flat. Which idea from the lesson explains this best?
A. Air is a solid, so it holds the shape of the bag.
B. Air is a liquid, so it flows to fill the bag.
C. Air is not matter, so it only looks like it is there.
D. Air is matter, so it takes up space inside the bag.
Correct Answer: D. Air is matter, so it takes up space inside the bag.
Bonus Score: 500 × 6 = 3,000 points
Bonus Multiplier: 3×
Question Type: Multiple Choice
Question: Why can a liquid flow, but a solid cannot?
A. Liquid molecules are far apart and spread out to fill the space.
B. Liquid molecules are close together but can slide past each other.
C. Liquid molecules are tightly packed and held in one place.
D. Liquid molecules are far apart, so they keep a fixed shape.
Correct Answer: B. Liquid molecules are close together but can slide past each other.
Bonus Score: 500 × 3 = 1,500 points
Bonus Multiplier: 6×
Question Type: Multiple Choice
Question: Ice, water and steam are all water, but they look very different. Which statement explains why?
A. Each one is made of a different kind of molecule.
B. Water can be a solid, a liquid or a gas, depending on its temperature.
C. Each one has a different amount of mass.
D. Only one of them is really matter.
Correct Answer: B. Water can be a solid, a liquid or a gas, depending on its temperature.
Bonus Score: 500 × 6 = 3,000 points
Bonus Multiplier: 5×
Question Type: Fill in the Blank
Question: Fill in the blank: In water, two hydrogen atoms are bonded to one ______ atom.
Correct Answer: oxygen
Bonus Score: 500 × 5 = 2,500 points
Bonus Multiplier: 4×
Question Type: Fill in the Blank
Question: Fill in the blank: In lemonade, the sugar is the ______ and the water is the solvent.
Correct Answer: solute
Bonus Score: 500 × 4 = 2,000 points
Bonus Multiplier: 5×
Question Type: Matching
Question: Match each colloid with the tiny part that is spread out in it.
List 1:
1. Milk
2. Fog
3. Whipped cream
4. Paint
List 2:
A. Trapped air
B. Tiny fat particles
C. Tiny bits of pigment (colour)
D. Tiny water droplets
Correct Answer:
1 → B: Milk = Tiny fat particles
2 → D: Fog = Tiny water droplets
3 → A: Whipped cream = Trapped air
4 → C: Paint = Tiny bits of pigment (colour)
Bonus Score: 500 × 5 = 2,500 points
Bonus Multiplier: 5×
Question Type: True or False
Question: True or False? The particles in a suspension are larger than the particles in a colloid.
Correct Answer: True
Bonus Score: 500 × 5 = 2,500 points
Bonus Multiplier: 3×
Question Type: Matching
Question: Match each example with the reason it is homogeneous or heterogeneous.
List 1:
1. Juice
2. Pizza
3. Granola
4. Air
List 2:
A. Oxygen, nitrogen and carbon dioxide mix evenly and cannot be seen separately
B. Sugar dissolves in water, so it looks the same everywhere
C. The crust, cheese and tomato sauce can all be seen
D. The oats, nuts and dried fruit can be easily separated
Correct Answer:
1 → B: Juice = Sugar dissolves in water, so it looks the same everywhere
2 → C: Pizza = The crust, cheese and tomato sauce can all be seen
3 → D: Granola = The oats, nuts and dried fruit can be easily separated
4 → A: Air = Oxygen, nitrogen and carbon dioxide mix evenly and cannot be seen separately
Bonus Score: 500 × 3 = 1,500 points
Bonus Multiplier: 3×
Question Type: Matching
Question: Match each science word with its meaning.
List 1:
1. Mass
2. Space
3. Molecules
4. Matter
List 2:
A. Everything around you (substance, object)
B. The amount of stuff in something
C. The room something takes up
D. Tiny particles that make up matter
Correct Answer:
1 → B: Mass = The amount of stuff in something
2 → C: Space = The room something takes up
3 → D: Molecules = Tiny particles that make up matter
4 → A: Matter = Everything around you (substance, object)
Bonus Score: 600 × 3 = 1,800 points
Bonus Multiplier: 2×
Question Type: Matching
Question: Match each state of matter with how its molecules are arranged.
List 1:
1. Solid
2. Liquid
3. Gas
List 2:
A. Far apart and move freely
B. Tightly packed and held in place
C. Close together and slide past each other
Correct Answer:
1 → B: Solid = Tightly packed and held in place
2 → C: Liquid = Close together and slide past each other
3 → A: Gas = Far apart and move freely
Bonus Score: 600 × 2 = 1,200 points
Bonus Multiplier: 4×
Question Type: One-Word Answer
Question: What do we do to water to turn it into steam? (One word)
Correct Answer: Heat (also accept: heat it; heating)
Bonus Score: 600 × 4 = 2,400 points
Bonus Multiplier: 6×
Question Type: Matching
Question: Match each word with its meaning.
List 1:
1. Pure substance
2. Element
3. Compound
4. Mixture
List 2:
A. Two or more substances that are not chemically joined
B. Made of two or more types of atoms combined
C. Made of only one type of atom
D. Only one kind of material
Correct Answer:
1 → D: Pure substance = Only one kind of material
2 → C: Element = Made of only one type of atom
3 → B: Compound = Made of two or more types of atoms combined
4 → A: Mixture = Two or more substances that are not chemically joined
Bonus Score: 600 × 6 = 3,600 points
Bonus Multiplier: 6×
Question Type: Multiple Choice
Question: Which statement about solutions is supported by the lesson?
A. All solutions are liquids.
B. In a solution, the solute is the part that does the dissolving.
C. A solution always has parts that you can see.
D. Solutions can be liquids, gases, or even solids.
Correct Answer: D. Solutions can be liquids, gases, or even solids.
Bonus Score: 600 × 6 = 3,600 points
Bonus Multiplier: 4×
Question Type: Multiple Choice
Question: A jar of milk stands still on a table all day. What do we expect to see at the end of the day?
A. The tiny fat particles are still evenly spread out in the water.
B. The fat particles have sunk to the bottom of the jar.
C. The fat particles have joined to make large pieces.
D. The milk has separated into two clear layers.
Correct Answer: A. The tiny fat particles are still evenly spread out in the water.
Bonus Score: 600 × 4 = 2,400 points
Bonus Multiplier: 3×
Question Type: Multiple Choice
Question: A bottle of muddy water is left still for a long time. What does the lesson say will happen?
A. The dirt will dissolve, and the water will look the same everywhere.
B. The dirt will stay evenly spread out, like the fat in milk.
C. The dirt will float to the top and stay there.
D. The dirt will settle at the bottom, and the water will become clear again.
Correct Answer: D. The dirt will settle at the bottom, and the water will become clear again.
Bonus Score: 600 × 3 = 1,800 points
Bonus Multiplier: 6×
Question Type: Fill in the Blank
Question: Fill in the blank: In a homogeneous mixture, no matter where you ______ it, it looks and tastes the same.
Correct Answer: sample
Bonus Score: 600 × 6 = 3,600 points
Bonus Multiplier: 2×
Question Type: One-Word Answer
Question: Two balls are the same size. Ball X has more stuff inside than Ball Y. Which property is greater for Ball X? (One word)
Correct Answer: Mass
Bonus Score: 700 × 2 = 1,400 points
Bonus Multiplier: 5×
Question Type: True or False
Question: True or False? Both a liquid and a gas have a fixed volume.
Correct Answer: False
Bonus Score: 700 × 5 = 3,500 points
Bonus Multiplier: 2×
Question Type: Matching
Question: Match each change with the state the water becomes.
List 1:
1. Steam is cooled to room temperature
2. Liquid water is frozen
3. Water is heated until it turns into steam
List 2:
A. Gas
B. Liquid
C. Solid
Correct Answer:
1 → B: Steam is cooled to room temperature = Liquid
2 → C: Liquid water is frozen = Solid
3 → A: Water is heated until it turns into steam = Gas
Bonus Score: 700 × 2 = 1,400 points
Bonus Multiplier: 3×
Question Type: One-Word Answer
Question: A pure substance has three different types of atoms combined. Is it an element or a compound? (One word)
Correct Answer: Compound
Bonus Score: 700 × 3 = 2,100 points
Bonus Multiplier: 3×
Question Type: Fill in the Blank
Question: Fill in the blank: Air is a solution made only of gases. This shows that a solution does not have to be a ______.
Correct Answer: liquid
Bonus Score: 700 × 3 = 2,100 points
Bonus Multiplier: 5×
Question Type: Matching
Question: Match each colloid with a fact from the lesson.
List 1:
1. Fog
2. Paint
3. Yogurt
List 2:
A. Helps us decorate our homes
B. A food that gives us a smooth texture
C. Forms when air cools and traps water particles
Correct Answer:
1 → C: Fog = Forms when air cools and traps water particles
2 → A: Paint = Helps us decorate our homes
3 → B: Yogurt = A food that gives us a smooth texture
Bonus Score: 700 × 5 = 3,500 points
Bonus Multiplier: 3×
Question Type: Multiple Choice
Question: A bottle of muddy water is left still for a long time. What does the lesson say will happen?
A. The dirt will dissolve, and the water will look the same everywhere.
B. The dirt will stay evenly spread out, like the fat in milk.
C. The dirt will float to the top and stay there.
D. The dirt will settle at the bottom, and the water will become clear again.
Correct Answer: D. The dirt will settle at the bottom, and the water will become clear again.
Bonus Score: 600 × 3 = 1,800 points
Bonus Multiplier: 4×
Question Type: True or False
Question: True or False? A homogeneous mixture will settle into layers if it is left standing.
Correct Answer: False
Bonus Score: 700 × 4 = 2,800 points
Bonus Multiplier: 4×
Question Type: True or False
Question: True or False? A rock and a gas are both matter, even though a gas is hard to see.
Correct Answer: True
Bonus Score: 800 × 4 = 3,200 points
Bonus Multiplier: 3×
Question Type: One-Word Answer
Question: A mystery material has a fixed volume. It also takes the shape of any container. Which state of matter is it? (One word)
Correct Answer: Liquid
Bonus Score: 800 × 3 = 2,400 points
Bonus Multiplier: 3×
Question Type: Fill in the Blank
Question: Fill in the blank: When water is heated and becomes steam, its molecules move ______ apart than they were in the liquid.
Correct Answer: farther (also accept: further)
Bonus Score: 800 × 3 = 2,400 points
Bonus Multiplier: 4×
Question Type: Matching
Question: Match each substance with the best description.
List 1:
1. Oxygen (O)
2. Water (H₂O)
3. Seawater
4. Air
List 2:
A. A compound
B. A mixture of oxygen, nitrogen and carbon dioxide
C. An element
D. A mixture of salt dissolved in water
Correct Answer:
1 → C: Oxygen (O) = An element
2 → A: Water (H₂O) = A compound
3 → D: Seawater = A mixture of salt dissolved in water
4 → B: Air = A mixture of oxygen, nitrogen and carbon dioxide
Bonus Score: 800 × 4 = 3,200 points
Bonus Multiplier: 2×
Question Type: True or False
Question: True or False? Air is a solution, because its gases are dissolved in each other.
Correct Answer: True
Bonus Score: 800 × 2 = 1,600 points
Bonus Multiplier: 2×
Question Type: Fill in the Blank
Question: Fill in the blank: A bottle of paint is left standing for a week. The tiny pigment bits do not settle, so the paint is a ______ and not a suspension.
Correct Answer: colloid
Bonus Score: 800 × 2 = 1,600 points
Bonus Multiplier: 4×
Question Type: One-Word Answer
Question: Cough syrup is an example of a suspension. If it stands for a long time, what do its larger particles do? (One word)
Correct Answer: Settle (also accept: sink; fall to the bottom)
Bonus Score: 800 × 4 = 3,200 points
Bonus Multiplier: 5×
Question Type: Multiple Choice
Question: Which statement correctly compares juice and milk?
A. Both are homogeneous because both are liquids.
B. Juice is a solution and is homogeneous. Milk is a colloid and is heterogeneous.
C. Juice is heterogeneous, and milk is homogeneous.
D. Both are suspensions because both have particles that settle.
Correct Answer: B. Juice is a solution and is homogeneous. Milk is a colloid and is heterogeneous.
Bonus Score: 800 × 5 = 4,000 points
Bonus Multiplier: 3×
Question Type: Fill in the Blank
Question: Fill in the blank: A closed box looks empty, but the air inside has mass. Because matter also takes up ______, the air must be using room in the box.
Correct Answer: space
Bonus Score: 900 × 3 = 2,700 points
Bonus Multiplier: 2×
Question Type: Matching
Question: A material is moved from a small box into a big box. Match each state of matter with what happens.
List 1:
1. Solid
2. Liquid
3. Gas
List 2:
A. Changes shape but keeps the same volume
B. Spreads out to fill the whole big box
C. Keeps its own shape and volume
Correct Answer:
1 → C: Solid = Keeps its own shape and volume
2 → A: Liquid = Changes shape but keeps the same volume
3 → B: Gas = Spreads out to fill the whole big box
Bonus Score: 900 × 2 = 1,800 points
Bonus Multiplier: 6×
Question Type: True or False
Question: True or False? Ice, liquid water and steam are made of the same water molecules, even though they are in different states.
Correct Answer: True
Bonus Score: 900 × 6 = 5,400 points
Bonus Multiplier: 6×
Question Type: Fill in the Blank
Question: Fill in the blank: Seawater is a mixture of salt and water, so it is not a pure substance. Because the salt dissolves evenly, seawater is called a ______.
Correct Answer: solution
Bonus Score: 900 × 6 = 5,400 points
Bonus Multiplier: 3×
Question Type: One-Word Answer
Question: Salt is stirred into water. The water now looks the same everywhere. What word describes this kind of mixture? (One word)
Correct Answer: Homogeneous
Bonus Score: 900 × 3 = 2,700 points
Bonus Multiplier: 6×
Question Type: True or False
Question: True or False? Paint is a colloid because its pigment pieces are large and sink to the bottom.
Correct Answer: False
Bonus Score: 900 × 6 = 5,400 points
Bonus Multiplier: 5×
Question Type: Matching
Question: Match each observation with the best name for the mixture.
List 1:
1. After 5 minutes, the particles are lying at the bottom
2. After a week, the tiny particles are still evenly spread out
3. The salt has disappeared, and the water looks the same everywhere
List 2:
A. Colloid
B. Solution
C. Suspension
Correct Answer:
1 → C: After 5 minutes, the particles are lying at the bottom = Suspension
2 → A: After a week, the tiny particles are still evenly spread out = Colloid
3 → B: The salt has disappeared, and the water looks the same everywhere = Solution
Bonus Score: 900 × 5 = 4,500 points
Bonus Multiplier: 2×
Question Type: Matching
Question: Match each mixture with what happens in it.
List 1:
1. Salt water
2. Sandwich
3. Muddy water
4. Milk
List 2:
A. Dirt falls to the bottom over time
B. Tiny fat particles stay spread out and do not settle
C. Bread, cheese and lettuce can be separated
D. Salt dissolves completely and does not settle
Correct Answer:
1 → D: Salt water = Salt dissolves completely and does not settle
2 → C: Sandwich = Bread, cheese and lettuce can be separated
3 → A: Muddy water = Dirt falls to the bottom over time
4 → B: Milk = Tiny fat particles stay spread out and do not settle
Bonus Score: 900 × 2 = 1,800 points