Vocab
The force of gravity between Earth and an object?
weight
The smallest unit of an element?
atom
An object's ability to float depends on its?
a. size
b. temperature
c. insulation
d. density
density
What are two properties of matter?
mass and volume
What is an atom?
smallest unit of an element
A measure of the amount of Matter in an object?
mass
What are the 3 states of matter?
solid, liquid, and gas
The number____ an atom has determines what elements it is?
a. electron
b. neutrons
c. protons
d. charges
protons
What are the 3 particles that make up an atom?
protons, neutrons, and electrons
How is an atom different from a molecule?
a molecule is made up of more than one atom joined together.
Dense structure inside the cell "middle"
nucleus
A measure of how tightly packed the matter is in an object?
density
Water can turn from liquid to gas by evaporating or?
a. condensing
b. pouring
c. boiling
d. freezing
boiling
How can density be measured?
Dividing an objects mass by its volume
Why is mercury used in thermometers?
it expands evenly when heated
A particle in the space outside the nucleus of an atom that carries one unit of negative electric charge?
Electron
Particular temperature for each substance at which it changes state from a liquid to a gas?
boiling point
Mass is the measure of the?
a. amount of material in an object
b. weight of an object
c. space an object takes up
d. density of an object
amount of material in an object
How is evaporation different from boiling?
Evaporation is the gradual change of a liquid to a gas. Boiling is the rapid change of state when heat is added.
How is a compound different from an element?
compound is two or more elements that are chemically combined
A particle that contains more than one atom joined together?
molecule
A particle in the nucleus of an atom that carries one until of positive electric charge?
proton
The molecules of a _____ tend to be packed tightly in an organized way?
a. gas
b. solid
c. liquid
d. neutron
solid
What is matter?
Anything that has mass and takes up space
If you have opposite poles what will happen to the magnets?
They will attract.