Studied by 110 peopleWhat is a solid?
A form of matter that has a definite shape and volume. Particles do not move as freely as in other states.
What is a gas?
A state of matter with no definite shape or volume and fills its container.
What is a liquid?
A state of matter that has a definite volume but no definite shape. Particles move more freely than in solids.
What will happen to the mass of water or ice in a sealed cup left for 3 days?
mass will not change
What will happen to the mass of water or ice in an unsealed cup left for 3 days?
mass will be lower due to evaporation
What do metals such as copper, gold, silver and iron have in common?
good electrical conductors
What color is copper?
orange-gold color
What happens when water boils?
some of the water becomes gas
What is the melting point?
the temperature at which water changes from a solid to a liquid
What is matter?
anything that has mass and takes up space
What is mass?
a measure of the amount of stuff in an object
What happens when solids dissolve in a liquid?
particles become evenly mixed in liquid
How do scientists test the hardness of material?
they scratch it
Copper is
an electrical conductor
What are two properties of iron?
magnetism and electrical conductivity
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