Matter
What is matter?
Matter is anything that has a mass and volume (takes up space).
What is the change from a solid to a liquid called?
Melting
Define the term particle?
The tiny building blocks that make up matter.
What does a heating curve show?
How temperature changes as a substance is heated.
What is an element
O
What is formed during a chemical reaction?
New substance
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The Lion King
I live in a pineapple under the sea. I work at the Krusty Krab. Who am I?
SpongeBob SquarePants
What are the three forms of matter?
Solid
liquid
gas
What is the change from a liquids to gas called?
evaporation
Describe how particles move and are arrange in a gaseous state.
Arrangment: No fixed position
Movment: Random
What happens to temperature when a substance is heated?
It generally increases.
What is a molecular compound
A substance that is made up of two or more different types of atoms chemically combined.
Which is written correctly: HE, he, He or He
He
True or False: Burning wax is chemical change
True. Burning produces new substances, so it is a chemical change.
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Frozen
I am a Portuguese football player. I have played for Manchester United and Real Madrid. My celebration is famous for “Siuuu!” Who am I?
Cristiano Ronaldo
Describe the property of solids in terms of its shape and volume.
Fixed shape & volume
What is the change from a solid directly into a gas called?
Sublimation
Explain how particles are arranged and move in a solid.
They are arranged in fixed and repating position. They vibrate slowly in fixed spot.
On a heating curve, what change of state happens at the boiling point?
Liquid → gas
H2O: contains the element hydrogen and oxygen atoms chemically bonded together. Classify H₂O as a molecular element or compound. Explain your answer.
Molecular compound, because it contains two or more types of atoms chemically bonded together.
What does the small number "2" mean in H2O
2 Hydgrogen atoms.
Look at the chemical equation:
2H₂ + O₂ → 2H₂O
Identify the reactants and the product.
Reactants: H₂ and O₂
Product: H₂O
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Spider-Man
I am an American singer. Some of my famous songs include “Shake It Off” and “Love Story.” Who am I?
Taylor Swift
Describe the properties of liquids in terms of its volume and shape.
Volume is fixed but shape can be changed, not fixed
If I want to change gas to liquid, what is the process called?
Condensation
Explain how particles are arranged and move in liquids.
The particles in liquids are arranged close together but in no fix pattern. They move freely.
On a heating curve, what is happening when a solid reaches its melting point?
Solid → liquid (melting)
A sample of air contains O₂ molecules, N₂ molecules and CO₂ molecules together. Is it an element, molecular element, molecular compound, or mixture? Explain.
Mixture, because it contains different types of molecules that are not chemically joined to each other
How many atoms are there altogether in one CO2 molecule?
3 atoms- 1 Carbon atom + 2 Oxygen atom.
Which TWO are physical changes: burning wood, melting ice, frying an egg, breaking glass?
Melting ice and breaking glass.
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Inside Out
I was a famous composer. I became deaf later in my life, but I continued to compose music. Who am I?
Ludwig van Beethoven
Describe the properties of gases
Gases don't have a fixed shaped or volume. They can be compressed.
Complete the following with the process it must use:
solid to liquid ; gas to solid ; liquid to gas
solid to liquid = melting
gas to solid= deposition
liquid to gas= Evaporation/boiling
Why can gases be compressed more easily than solids and liquids?
Because gas particles are much further apart and have lots of empty space between them.
A substance is heated from a solid until it becomes a gas. What TWO changes of state will occur?
Melting and evaporation.
What is a molecular element
A substance that is made up of two or more of the same elements which are chemically joined together.
A student writes the symbol CO for cobalt. Explain whether this is correct or not?
Otherwise it means 1 Carbon atom + 1 Oxygen atom for Cobalt which is incorrect.
A student says: “Breaking glass cannot be a physical change because you cannot easily put the glass back together.” Is the student correct? Explain.
No. Breaking glass is a physical change because no new substance is formed. The glass changes size/shape, but it is still glass.
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Up
I am a Norwegian striker who plays for Manchester City, and I represented Norway at the 2026 FIFA World Cup. Who am I?
Erling Haaland