science

5. have both metallic and non-metallic properties
8. compounds are pure substances formed as a result of the attraction between particles of opposite charges, called ions.
10. change occurs when two or more materials react and create new materials.
11. combination of pure substances
12. happens to your ice cream when you leave it in the sun
14. new materials produced by the reaction are called
15. when you leave water outside on a surface and then turns into steam
17. another same as whims
18. They are the most reactive non-metals.
20. They react when exposed to air and water as well, but their reactivity is not as strong as that of the alkali metals
21. the transition of a substance directly from the solid to the gas phase
22. e substance is dissolved in another, creating what looks like one
23. can be a solid or a gas.
24. is also a cloudy mixture, but the particles of the suspended substance are so small that they cannot be easily separated out from the other substance.
25. change is one in which a material changes from one state to another.

1. something you say that your are very cold
2. when non-metals combine, a pure substance called a
3. metals These are the most reactive of the metals.
4. The most stable and nonreactive elements.
6. something that will harm you or kill you
7. mass is the mass of one atom of an element.
9. something you should take precaution
13. a cloudy mixture in which tiny particles of one substance are held within another.
16. are a group of atoms acting as one.
19. something that may hurt you or kill you