Types of Changes
Spoiling milk is an example of what kind of change?
Chemical change
As a candle burns it gets shorter. Where does the wax go?
The wax burns and releases as a gas into the air.
The three states of matter are:
The molecule diagrams for each state of matter looks like:
Solid, Liquid, and Gas
What is the smallest possible unit of matter?
A molecule
Fruits blended together is what type of change?
A physical change.
What makes cinnamon rolls get bigger when you bake them?
Gas bubbles inside the cinnamon rolls get bigger.
If 22 grams of sugar dissolves into 146 grams of water. The new weight of the liquid is:
168 grams
A particle of matter is smaller or bigger than the width of a human hair.
Smaller
When something burns, is it a physical change or a chemical change?
Chemical Change
The fire snake weighed slightly less after it burned. Where did that matter go?
It escaped as a gas.
A change of state of matter is most often what kind of change?
Physical
What is an example of matter?
Energy
Glue
Quiet
Attention
Glue
Mixing air into egg whites is an example of a _______ change.
Physical change
Solubility tells us.....
How well something dissolves.
Gallium spoon melting is an example of what change?
Explain why.
It is a physical change because once you melt the spoon a puddle of Gallium is left. The material did not change, it just changed states of matter.
What property would you use to decipher between types of metals?
Magnetism
What is the difference between a physical change and a chemical change?
A physical change is when something changes shape or color but not material.
A chemical change is when a new material is formed.
What property of plastic makes it a good choice for a pot handle?
It is not conductive
Because the gas inside the balloon is ______ (more/less) dense than the gas around it, it floats.
less
What property could you use to decipher between different liquids?
Solubility