Vocabulary
True or False
States of Matter
Chemical Reactions
Short Answer
100
A solid seems to disappear when it is mixed with a liquid.
What is dissolve.
100
Matter is constantly changing.
What is TRUE.
100
A state of matter that is hard, has a definite shape and size, and can be changed.
What is a solid.
100
This was produced when we put water and an Alka-Seltzer tablet in a sealed plastic bag.
What is GAS.
100
Stirring a solid makes it ______________ faster in a liquid.
What is dissolve.
200
A liquid changes to a solid when heat is removed from the liquid.
What is freezing.
200
A state of matter can change from one state to another.
What is TRUE.
200
A state of matter that flows, can be poured, is wet, takes the shape of its container, and can be changed.
What is a liquid.
200
This was produced when we rinsed steel wool in vinegar.
What is RUST.
200
When we evaporated salt water _______________formed in our petri dishes.
What is crystals.
300
A solid changes to a liquid because heat is added to the solid.
What is melting.
300
A chemical reaction occurs if a liquid is formed.
What is FALSE. A chemical reaction occurs when a gas is formed, when a solid is formed (example: rust), it changes color, or it changes temperature.
300
A state of matter that has no definite shape, spreads out to fill the surround space, and can be changed.
What is a gas.
300
When we rinsed the steel wool in vinegar this happened to the temperature in the cup.
What is the temperature was warmer.
300
We used a __________ to seperate a gravel and salt mixture. We used a __________ to seperate a gravel and water mixture.
What is sieve. What is filter.
400
A liquid is changed to a gas when the liquid is heated.
What is evaporation.
400
A gas has a definite shape.
What is FALSE. A gas does not have a definite shape. It spreads out to fill the space it is contained in.
400
Describe an experiment where we changed a solid to a liquid.
Explain...use science words.
400
Mixing baking soad and vinegar caused a chemical reaction. True or False.
What is TRUE. Explain...
400
The speed that a dissolvable solid (example salt or sugar) dissolves in a liquid depends on these three things:
What is... 1. Whether and/or how the mixture is stirred. 2. The size of the solid. 3. The temperature of the solid.
500
This occurs when two substances are mixed together and form a new substance.
What is a chemical reaction.
500
Rust forming on the steel wool when we rinsed it with vinegar was an example of a chemical reaction. Explain why or why not.
What is TRUE. Explain...
500
Describe an experiment where we saw a change by using evaporation.
Explain...use science words.
500
Explain your "Recipe for Change" to the class. Did a chemical reaction occur? Why or why not?
Explain.
500
Explain why it would take your mom longer to make you chocolate milk (with cocoa powder and milk) than it would take her to make you hot chocolate (with warm milk and cocoa powder), if it was that same amount of cocoa powder and she was stirring the liquid at the same speed. *Hint think about temperature of the water when we dissolved sugar.
What is...warm milk (or other liquid) dissolves the cocoa powder (or other solid) faster than cold milk (or other liquid).
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