| A | B |
|---|
| atomic number | numberof protons nucleusof an atom |
| boiling | process in which particles inside a liquid as well asthose on the surface of a liquid change to gas |
| boiling pointe | temperature at which a substance changes from liquid to gas pharse |
| chemical change | process by which a substance becomes a new and different substance |
| chemical property | property that describes how a substance becomes into a new substance |
| Chemical Reaction | The process in which the physical & chemical propertiees of the origional substance change as a new substance with different physical & chemical properties is formed |
| Chemical Symbol | Shorthand way of representing an element |
| Compound | substance made up of molecules that contain more that 1 kind of atom; 2 or more elements chemicaly combined |
| Condensation | Change of gas to liquid |
| Corrosion | Gradual wearing away of a metal due to a chemical reaction in which the metal element is changed into a metallic compound |
| Crystal | Solid in which the particles are arranged in a regular, repeating pattern |
| Density | Measurment of how much mass is contained in a given volume of an object; mass per unit volume |
| Element | simplest type of pur substance |
| Evaporation | Vaporization the takes place at the surface of of a liquid |
| Flammability | ability to burn |
| freezing | Change of a liquid to a solid |
| freezing point | tempature at which a substance changes from the liquid phase to the solid phase |
| gas | phase in which matter has no definite shape or volume |
| gravity | fore of attraction between all objects in the universe |
| Heterogeneous | MIXTURE:substance that doesn't appear to be the same throughout |
| Homogeneous | MIXTURE:mixture that appears rhe same throughout |
| Inertia | Tendency of objects to remain in motion or stay at rest unless acted upon by an outside force |
| Insoluble | un albe to be dissolved in water |
| Liquid | Matter with no definite shape but with a definite volume |
| Mass | Ammount of matter in an object |
| Matter | Anything that has mass & volume |
| Melting | Change from a solid to a liquid |
| Melting point | Tempature at which a substance changes from the solid phase to the liquid phase |
| Mixture | Matter that consists of 2 ofmore substances mixed but not chemically combined |
| Molecule | Structure made up of 2 or more atoms |
| Nucleus | small, dense positively charged center of an atom |
| Phase | State in which matter can exist: Solid, liquid, gas or plasma |
| Physical property | Characteristic that distinguishes 1 type of of matter from another & can be observed without changing the identity of the substance |
| Plasma | Phase in which matter is extermely high in energy & can't be contained by ordinary matter; very rare on earth |
| Property | Characteristic of a substance |
| Pure substance | Substance made p of 1 kind of material having definate properties |
| solid | Phase in which matter has a deifinite shape & volume |
| Sloubility | The amount of a solute that can be completly dissolved in a given amountof solvent at a sepcific temperature |
| Soluble | Can be dissolved in water |
| Solute | Substance that is dissolved in a solution |
| Solution | Homogenous mixture in which 1 substance is dissolved in another |
| Solvent | Substance that does the dissolving in a solution |
| Sublimation | Change from the solid phase directly into the gas phase |
| Vaporization | Change from a liquid to a gas |
| Volume | The amount of space an object takes up |
| Weight | Measure of the force of attraction between objects due to gravity |
