Particle Power
True or False: Matter is made of particles that are too small to be seen without a microscope
What is true?
If you freeze 100g of liquid water, how much will the ice weigh?
What is 100g?
Name three states of matter.
What is solid, liquid, and gas?
Is a rusting bicycle an example of a physical or chemical change?
What is chemical?
This type of mixture is the same throughout, like lemonade or saltwater.
This state of matter has particles that are packed tightly together and only vibrate in place
You dissolve 10g of salt into 90g of water. What is the total mass of the saltwater solution?
What is 100g?
Is melting an ice cube a physical change or a chemical change?
What is physical?
Name one "clue" that a chemical reaction has happened
What is color change, bubbling/gas, heat/light produced, or odor?
Name a tool you could use to separate a mixture of iron filings and sand.
What is a magnet?
When water boils and turns into steam, what happens to the distance between the water particles?
They move much further apart
A 50g piece of clay is torn into five smaller pieces. What is the total weight of all five pieces combined?
What is 50g?
This is the temperature at which a liquid turns into a solid.
What is freezing point?
When vinegar and baking soda are mixed, bubbles form. What state of matter are those bubbles?
What is gas/carbon dioxide?
If you have a mixture of sand and water, what is the best way to separate them?
Explain why a balloon stays inflated even though you can't see the air inside.
Tiny gas particles are constantly bumping into the sides of the balloon
The Law of ______ of Matter states that matter cannot be created or destroyed, even during a change.
What is conservation?
List two ways you can physically change a piece of paper without changing it into a new substance.
What is tearing, folding, crumbling, or cutting?
Why is burning wood considered a chemical change instead of a physical one?
Because it creates new substances like ash and smoke
To separate salt from water, you should use this process which involves turning the liquid into a gas.
What is evaporation?
If you spray perfume in one corner of the room, eventually someone in the opposite corner smells it. What is this process of particles spreading out called?
What is diffusion?
If you bake a cake using 500g of ingredients, but the final cake only weighs 480g, where did the "missing" 20g go?
It escaped into the air as water vapor/gas
When a substance changes from a gas directly to a liquid, the process is called ________.
What is condensation?
In a chemical reaction, the substances you start with are called reactants. What are the new substances created called?
Why is trail mix considered a mixture but not a solution?
Because you can easily see and physically separate the different parts