| A | B |
|---|
| atoms | the smallest particle of an element that still has all the properties of that element |
| chemical properties | characteristics of an element or compound that determine how it will react with other elements or compounds |
| compound | a substance containing two or more chemically combined elements and having properties different from those elements |
| density | how tightly packed a substance's molecules are |
| electrons | one of the three subatomic particles that has a negative electric charge |
| elements | a substance that contains only one kind of atom |
| ions | an atom with an electric charge |
| isotopes | atoms of the same element that have the same number of protons in their nuclei but different number of neutrons |
| matter | anything that takes up space and has mass |
| mixture | a combination of different substances that keep their own physical and chemical properties despite being mixted |
| molecule | the smallest particle of a compound that still keeps all the properties of the compound |
| neutrons | one of the 2 particles that make up the nucleus of an atom, it has no electric charge |
| physical properties | characteristcs of an element or compound that affect weight , color, density, and such, but don't affect how it will react with other elements or compounds |
| protons | one of the 2 particles that make up the nucleus of an atom and has a positive electric charge |
| superconductors | a material that allows electricity to pass through it without resistance |
