| A | B |
|---|
| Element | A substance that can not be split into a simpler substance. |
| Compound | A substance formed by two or more elements reacting to form another new substance that is chemically different from any of the single elements. |
| Physical Change | A change in size, shape or state of a material. No new matter is formed. |
| Chemical Change | Any change in which one or more new substances are formed. |
| Density | Mass of an object. |
| Nucleus | The center or core of an atom. |
| Protons | Have a positive electrical charge. |
| Neutrons | Have no charge. |
| Electrons | Have a negative electrical charge. |
| Protons & Neutrons | What the nucleus is made up of. |
| Atoms | Tiny building blocks of matter. |
| Volume | The amount of space that something takes up. |
| States of Matter | Solid, Liquid, Gas, Plasma |
| Chemistry | The science of matter. |
| Atomic Number | Determined by the number of protons in the nucleus of an atom of an element. |
| Atomic Number = ? | Number of electrons. |
| Atomic Mass | Combined mass of an atom's protons & neutrons. |
| Atomic Weight | The total number of particles in an atom's nucleus. |
| Condensation | Condensation is the changing of a gas or a vapor into a liquid by cooling |
| Meniscus | Curved surface of a test tube. |
| Mass | the measure of the amount of matter an object has in it. |
| Matter | something that has mass which can exist in the form of a solid, liquid, gas or plasma |
| Physical Properties | Color, shape, smell, texture, taste, size, state of matter, temperature at which a substance boils, melts, or freezes. |
| Chemical Properties | How substances react with other substances such as water, air or fire. |
| Chemical Formula | What scientists write to describe what happens during a chemical reaction. Chemical changes are respresented by this. |
| Substance | Matter that occupies space and has mass. |
