click below
click below
Normal Size Small Size show me how
Matter/Atoms
| Question | Answer |
|---|---|
| Matter | anything that has mass and takes up space |
| Solid | has definite volume and definite shape |
| liquid | has definite volume but no definite shape |
| gas | no definite volume and no definite shape |
| physical properties | characteristics that don't change the matter, properties that use the 5 senses, example- shiny |
| chemical properties | characteristics that change the identity of the matter example if something can burn |
| physical change | a change that doesn't change the identity of the matter example: slicing an apple |
| chemical change | a change that does change the identity of the matter example burning wood or digesting food |
| mixture | combination of 2 or more substances, the substances still have the same identity and can be separated example - Chex mix |
| solution | a special type of mixture, one substance dissolves into another example- ocean water or air |
| solute | substance being dissolved |
| solvent | substance that dissolves the other substance |
| How can we separate mixtures? | chromatography, filter, sieve, magnet or evaporation |
| atom | smallest part of an element, building blocks of matter |
| element | made of only one type of atom example- oxygen |
| proton | positively charged particle in the nucleus of an atom |
| neutron | a particle in the nucleus of an atom, has no charge, is neutral |
| electron | a negatively charged particle, found outside the nucleus |
| atomic number | the number of protons |
| atomic mass | the number of protons plus the number of neutrons |
| freezing | a liquid changes to a solid |
| melting | a solid changes to a liquid |
| evaporation | a liquid changes to a gas |
| condensation | a gas changes to liquid |
| compound | made of 2 or more different elements chemically bonded together |
| molecule | made of 2 or more atoms joined together without changing the properties |