Vocabulary
Anything that has mass and takes up space.
Matter
What are the 3 states of matter?
Solid, Liquid, and Gas
Is more mass created when an ice cube melts?
No, matter cannot be created or destroyed even if the form changes.
How can physical properties help identify a substance? (Give 4 property tests that scientist could use)
Scientists can test magnetism, conductivity, hardness, and solubility. These properties help determine what a material is made of because different substances have different characteristics.
True or False: If something has a lot of mass, then it has to take up a lot of space
False, something can be small and still have a lot of mass. EX: Bowling Ball, Rock, Etc.
The state or shape of matter (Solid, Liquid, Gas)
Particles are tightly packed, definite volume, definite shape
Solid
Give an example of a solid, liquid, and a gas
Open response
(Sample answer: Water, Wood, and Helium)
A measure of how well electricity passes through a material
Conductivity
Name two physical properties
The substance that gets dissolved.
Solute
Particles are close together, but move around, Definite volume, no definite shape
Liquid
Which of the following is always true of matter?
A. All matter is made of particles
B. Matter can only be a solid or liquid
C. All forms of matter can be seen
D. Matter is shiny
A. All matter is made of particles
A _____ reaction is a change that forms a new substance.
Chemical
Bubbles forming, gas produced, odor produced, or new substance being created
The law that matter cannot be created or destoryed
Conservation of Mass
Particles are spread far apart, no definite volume, no definite shape
Gas
In a sugar-water mixture:
A. The solution is a solid
B. The sugar dissolves
C. A new substance forms
D. The sugar cannot be separated
B. The sugar dissolves
How would glass be beneficial for a greenhouse? (Give two reasons/properties)
(Hint: A greenhouse is an open facility that houses and grows plants)
Accept any of the following:
Transparent, durable, allows sunlight to enter, helps keep plants warm, blocks harmful UV rays
Scenario: Today, I had a cup of water that was 5 grams. Then, I added salt to my water to create a new solution. Whenever I mixed the two, I could no longer see my salt. When I put my cup on a scale, the mass increased by 2 grams. Explain what happened to my mass and the salt.
(Sample answer: The salt dissolved in the water, but it did not disappear. A new solution was created and the mass increased due to the salt being mixed with the water.)
A _______ is a substance that does the dissolving.
Solvent
______ is the amount of matter in an object.
______ is the amount of room an object takes up.
Why doesn’t the mass of ashes equal the mass of the wood before burning?
A. The law doesn’t apply
B. Matter was destroyed
C. The wood was wet
D. Some products became gases and floated away
D. Some products became gases and floated away
How would plastic around electrical plus be beneficial? (Give two reasons/properties)
Accept any of the following:
Is an electrical insulator, Prevents electric shock, Is waterproof, Is durable, Can be molded into shapes
Which 4 materials are soluble in water?
Salt, Sand, Oil, Coffee, Soil, Baking Soda, Sugar, and Flour
Salt, Sugar, Baking Soda, and Coffee