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WorksheetsPOM 6-8 Test Review
Total questions: 20
Worksheet time: 10mins
This is called a...
Heating curve or S-curve
Stairstep curve
Bar graph
Chemical reaction diagram
What occurs at the plateaus?
heating
nothing occurs
phase change
chemical reaction
Condensation is _______ to ________.
solid --> liquid
gas --> solid
liquid --> gas
gas --> liquid
Closest to what time did this substance begin to boil?
6 mins
14 mins
10 mins
18 mins
What is the boiling point of this substance?
90
30
55
120
What is the opposite of freezing?
boiling
melting
condensation
freezing
What is the correct definition of a phase change?
Matter increasing in mass.
Matter getting hotter.
Matter becoming a different substance.
Matter changing from one state to another.
The Law of Conservation of Mass states....
Mass changes in a closed system.
The Big Bang is real.
Matter cannot be created or destroyed.
Closed systems are better than open systems.
What is happening when a substance boils?
liquid --> gas
gas --> liquid
solid --> liquid
liquid --> solid
A forest catches fire and burns.
chemical change
physical change
Which BEST describes the experiment set up here.
closed system, mass can be conserved
closed system, mass will change
open system, mass can be conserved
open system, mass will change
Stone is ground in pebbles.
chemical change
physical change
Phase changes are examples of...
physcial change
chemical change
What state of matter is this substance at 120 degrees C?
solid
liquid
gas
What will be the result of the open system shown here?
Nothing
Evaporation
Boiling
Explosion
During a phase change in a closed system, the mass will...
double
decrease by half
stay the same
increase or decrease depending on the temperature
Sugar dissolves in iced tea.
chemical change
physical change
A penny turns green in the presence of oxygen.
chemical change
physical change
Ices melts.
chemical change
physical change
What state of matter is this substance at letter D?
solid
liquid
gas
