Share Chapter 8
Save to Folder
what is an atom?
the basic building block of matter
what are atoms made of?
protons neutrons and electrons
where are protons and neutrons found?
in the nucleus
where are electrons found?
orbiting the nucleus
what charge does a proton have?
positive
what charge does a neutron have?
no charge
what charge does an electron have?
negative
what is the mass of a proton?
about 1 amu
what is the mass of a neutron?
about 1 amu
what is the mass of an electron?
very small or almost zero
what does electrically neutral mean?
protons equal electrons
what does a ball in a ball and stick model show?
an atom
what does a stick in a ball and stick model show?
a bond
what do circles represent in simple models?
atoms or molecules
what symbol is used for hydrogen?
H
what symbol is used for oxygen?
O
