Terms in this set (21)
is anything which takes up space
are the tiny particles which make up all matter
is the amount of space an object takes up
is the amount of matter in an object
is the amount of matter in a set amount of space. Mass divided by volume
Law of Conservation of Mass
Mass cannot be created or destroyed. It can only change its form
are positively charged subatomic particles. They are large subatomic particles located in the nucleus.
Dense center of an atom
have NO charge. They are neutral
are the subatomic particles that have a negative charge.
the place outside the nucleus where we find electrons. It is MOSTLY EMPTY SPACE with the tiny electrons flying around in it.
Atoms with different numbers of protons are classified as different elements.
is given at the top of the box for each element.
is the average number of protons PLUS neutrons in an atom of that element.
Elements with different numbers of neutrons are called isotopes.
have the same number of protons and electrons. The positive and negative balance out.
means the atom has more protons
means that there are more electrons.
are charged particles. This means they have lost or gained electrons.
is two or more atoms held together by a chemical bond.
scanning electron microscope
a device that can see the outside of individual atoms.
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Vocabulario 2.2 (Jamesha Walwyn)