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MATTER
Science 8th Grade
| Question | Answer |
|---|---|
| 4 states of matter | Solid, liquid, gas, plasma |
| Another word used for states of matter | phases |
| Kinetic Theory describes the ________ of particles in all matter | motion |
| How tightly particles are packed determines what _______ it takes | state |
| what casues particles to vibrate or mover around more? | heat |
| cooling causes particles to move around | less |
| ___________ have a definite shape and a definite volume | solids |
| __________ have a definite volume but NO definite shape | liquids |
| _________ have no definite volume and no defininte shape | gasses |
| what causes a change in state/phase? | adding or removing heat |
| _________ is an ionized gas with equal amounts of positively charged nuclei of atoms and negatively charged electrons | plasma |
| when a solid changes to a liquid it is called | melting |
| freezing is when a liquid changes to a | solid |
| vaporization is the term that describes ______ changing to ______ | liquid to a gas |
| the moisture you see on the mirror in your bathroom after a hot shower is called | condensation |
| if you put dry ice on a table it turns from a solid to a | gas |
| solid changing to a gas is called | sublimation |
| northern lights , the glow of a neon sign, and visible electrical sparks are all examples of | plasma |
| when you heat a solid or a liquid its particles begin to move | faster |
| when particles in a solid or liquid move faster they move further apart. this is called | expansion |
| what is it called when particles in a solid or liquid move slower and closer together? | contraction |
| an ________ cannot be broken down by any other substance | element |
| the symbol for an element can be found where ? | periodic table |
| FE is the ______ for iron | symbol |
| a _________ is formed when two or more elements combine chemically | compound |
| NaCI is the ______ for sodium choride | formula |
| a _______ _________ has a definite composition that will not vary | pure substance |
| a ________is a combination of many different elements that are not chemically combined | mixture |
| mixtures will not be represented by a | formula |
| it is very ______ to separate a mixture | easy |
| _______ _________ created a version of the periodic table of elements and predicted properties of yet to be descovered elements | Damitri Mendeleev |
| ________ is everything around us. It takes up space and has mass | Matter |
| A ________ is the smallest particle in a chemical element or compound. It is made up of two or more atoms. | Molecule |
| Three methods to separate mixtures are _______ ______ and _________ | Distillation, Filtration, and Evaporation |
| Cake | mixture |
| choco milk | mixture |
| Au | element |
| O | element |
| Water | compound |
| H20 | compound |