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Physical Changes
Chemical Changes
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Law of Conservation
100
List 1 way physical change can be caused.
Physical change can be caused by grinding, cutting, crushing, bending, breaking, heating, cooling, or squishing.
100

What is the definition of a chemical change?

A change in which a NEW substance is formed. 

100
Is change in phase a physical or chemical change?
Physical change.
100

What is the law of conservation of matter?

The weight of an object is equal to the sum of all the parts.

200
What is an example of physical change when making a cake?
Stirring the batter, changing from liquid to solid, and change in size (rising).
200
What is chemical change?
Chemical change is when a substance is changed into a different substance.
300
What is one way you can tell a chemical reaction occurred? 

A change in color, smell, or temperature. 

400
True or False? Physical Changes are always reversible.
False, though usually they are reversible.
400

How can energy be released during a chemical change?

It can be released in the form of heat or light.

400
What is 1 type of chemical reactions?
Composition reactions, decomposition reactions, or single replacement reactions
500
Which of the following is NOT a physical change?

Glass Breaking

Bleaching your hair

Mixing salt and water

Melting Butter

Bleaching your hair is not a physical change.
500

Jon roasted a marshmallow over a flame while he was camping. He noticed the marshmallow caught on fire and burnt. He mentioned that it is only a physical change because it's still a marshmallow. Is he correct?

No, because the burnt marshmallow is a different substance than the regular marshmallow. 

500
What is pH?
A measure of how acidic or basic a solution is from a scale of 0-14.