Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Science chemistry
| Question | Answer |
|---|---|
| chemistry | the study of the properties of matter and how matter changes |
| matter | anything that takes up space (volume) and has weight (mass) |
| element | a substance made of only one kind of atom that cannot be broken down into other substances |
| compound | a substance made of two or more elements chemically combined in a specific ratio |
| molecule | a combination of two or more atoms |
| atom | the smallest particle of an element |
| nucleus | the central core of an atom containing protons and neutrons |
| proton | a small positively charged particle found in the nucleus of an atom |
| neutron | a small uncharged particle found in the nucleus of an atom |
| electron | a tiny, negatively charged, high-energy particle that orbits the nucleus of an atom |
| periodic table | a worldwide system used for organizing elements into categories based on how they react |
| atomic number | the number of protons in the nucleus of an atom |
| atomic mass (weight) | the average mass of one atom of an element |
| group (family) | elements in the same vertical column of the periodic table |
| period | elements in the same horizontal row |
| physical change | a change that alters the form or appearance of a material but does not make the material into a new subtance |
| chemical change | a change in matter that produces a new substance |
| symbol | a one or two letter set of characters that is used to identify elements |
| subscript | the number in a chemical formula that tells the number of atoms in a molecule or ratio of elements in a compound |
| chemical formula | a combination of symbols that represents the elements in a compound |
| coefficient | the number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction |
| chemical bond | a force that holds atoms together |
| chemical equation | a short, easy way to show chemical reactions using symbols instead of words |
| law of conservation of mass | the principle stating that matter is not created or destroyed during a chemical reaction |
| mixture | two or more substances that are mixed together but not chemically combined |
| solution | a mixture in which a substance is spread evenly throughout another substance |
| suspension | a mixture in which particles can be seen and easily separated by settling or filtration |
| substance | pure matter, always the same in composition |
| ion | an atom or group of atoms that has become electrically charged by gaining or losing an electron |
Created by:
WSS Science 6
Popular Chemistry sets