ATOMS
what is the middle of an atom called
nucleus
what is Au
Gold
What is a chemical reaction
when something new is created
What are the three types of molecules in a atom
proton, electron, neutron
how many types of atoms are there in a element
1
what is the difference between a chemical and a physical change
in a physical change nothing new is created the energy just spreads
why cant we see atoms
they are very small
what is the atomic mass of an element
neutrons - protons
what are the properties of a chemical change
form, change, or color
how many molecules are in a atom
3
What is H2O
Water
how does a chemical change happen
rust, burn, corrode
what is a atom
a form of protons neutrons and electrons combined into one
what is the periodic table of elements
a table full of all the elements
when does a chemical change happen
when a nail rusts or when a fire lets out oxygen