Solids, Liquids, and Gases
Heating Curves
Exothermic vs. Endothermic
Unit 1
100

What phase can change shape and volume?

gas

100
A phase change has an increase in _______________ energy on a heating curve.

potential

100

Endothermic is absorbing or releasing heat?

Absorbing

100

What is the SI unit for time?

second

200

What phase has a definite shape?

solid

200

A cooling curve has two phase changes on it. What are they?

condensation and freezing

200

What phase changes are exothermic?

freezing, condensation, deposition

200

What is 6000 in scientific notation?

6.0 x 103

300

What phase has particles moving?

solid, liquid, and gas

300

A heating curve STARTS with what phase?

Solid

300
If a process is ENDOthermic, it will have a heating or cooling curve?

heating

300
How many significant figures are in 0.04500?

4: 0.04500

400

What is it called when a substance goes from a solid to a gas?

sublimation
400

As temperature increases, ________________ energy also increases.

Kinetic

400

Sublimation is exo or endothermic?

endothermic

400

Look at the following data:

6.78, 5.9, 6.0, 7.2, 8.4

If the TRUE value is 4.0, is this data accurate, precise, both, or neither?

Neither

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