Matter can neither be created nor destroyed, only transformed
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20
Describe the difference between a Physical and Chemical CHANGE
A physical change is a change in matter that does NOT alter the chemical composition of the substance, while a chemical change results in a NEW substance
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20
A substance has a mass of 25.0 g and a volume of 32.25 mL, what is the substance's density?
.775 g/mL
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15
If you heat up a substance, such as a gas, its volume will increase, what will happen to the density?
The density of the substance would decrease.
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20
Describe the difference between Intensive and Extensive Properties
Intensive properties depend on the type of matter in a sample, while Extensive properties depend on the amount of matter in the sample
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baam
Lose 10 points!
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star
Double points!
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rocket
Go to first place!
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lifesaver
Give 25 points!
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10
Concrete
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10
Mixture of metals are special homogeneous mixtures called
Alloys
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15
What is the formula for calculating density?
d = m/v
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10
If the matter can be physically separated it is classified as this
Mixture
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15
All of the following are signs that a chemical reactions took place, EXCEPT
