13 questions
Which of the following describes a solid?
A state of matter in which molecules vibrate in fixed positions
A state of matter in which molecules move freely while remaining in contact
A state of matter in which molecules are in constant random motion
Which of the following describes a liquid?
A state of matter in which molecules vibrate in fixed positions
A state of matter in which molecules move freely while remaining in contact
A state of matter in which molecules are in constant random motion
Which of the following describes a gas?
A state of matter in which molecules vibrate in fixed positions
A state of matter in which molecules move freely while remaining in contact
A state of matter in which molecules are in constant random motion
To change from a solid to liquid state
Melt
Evaporate
Freeze
To change from a liquid to gas state
Melt
Evaporate
Freeze
To change from a liquid to solid state
Melt
Evaporate
Freeze
When a substance changes from one phase to another, it's called a
Phase change
Transformation
Mutation
In which state of matter do particles have the most energy and the fastest speed?
Solid
Liquid
Gas
In which state of matter do particles have the lowest energy and the slowest speed?
Solid
Liquid
Gas
Select the properties of liquids from the list.
Fixed shape
No shape
Not sticky
Sticky
Which of these statements are true ?
Gases have no shape
Solids have no shape
Liquids have no shape
Liquids have a fixed shape
Evaporation happens when the sun ___________ water and turns it into vapor.
cools
heats up
freezes
lights up
Ali pours water into a glass dish. He leaves the dish in a warm place for 8 days. After 8 days, there is less water in the dish. Why does the dish contain less water?
The water evaporated
The water froze
The water melted