matter
Matter is anything that has....
mass and volume
The charge on a proton is...
positve
H stands for ...
hydrogen
When an elements have the same number of electrons as protons the atom is ....
neutral
The elements do not react with any other elements
noble gases
An example of something that is not made of matter...
forms of energy, light heat, electricity,
The charge on an electron is ....
negative
hydrogen has this many protons
one
lithium has this many neutrons
four
why don't noble gasses react with other substances?
their outer energy level is perfect
The amount of matter in grams is its....
mass
The charge on a neutron is....
neutral
the atomic number tells you ....
how many protons the element has
helium has this many protons
two
name a noble gas
helium , neon, argon,
the amount of space an object takes up is its
volume
The nucleus contains ....
protons and neutron
protons and electrons and neutrons are called
subatomic partilces
the atomic mass of oxygen is ....
16 amu
where are the metals on the periodic table
left
the smallest amount of matter is one ....
atom
they fly around the nucleus in orbits or energy levels
electrons
to find the number of neutron you have to....
subtract the atom mass from the atomic number
amu stands for
atomic mass units
When you put sodium in water it explodes because it is very
reactive