| Question | Answer |
|---|---|
| matter | anything that takes up space |
| mass | the stuff that matter is made up of |
| volume | how much room matter takes up |
| density | the amount of stuff matter takes up a specific space |
| atom | smallest part of an element |
| electron | particle of an atom that surrounds the nucleus |
| proton | an atom that is positively charged |
| neutron | an atom located in the nucleous |
| periodic table | a large grid that classifies all of the elements |
| periods/rows | rows that tell how many energy levels each element has |
| groups/columns | columns that tell how many valence electrons each element has |
| valence electrons | the electrons that move on the outer shell |
| atomic number | how any protons an element has inside the necules |
| atomic mass | the measurement of the mass for an elements atoms |
| chemical property | the ability of substances to combine with each other forming a whole new substance |
| physical property | the state of matter and appearances of a substance |
| ionic bond | when elements either lose or gain an electron during bonding |
| covalent bond | when elements share electrons |
| chemical change/reaction | elements bond together through the attractive force of electrons |
| compound/molecule | two or more elements combine together in a specific ratio/pattern creating a whole new substance |
| mixture | two or more substances combined |
| nobel gases | all of the elements in group 18 |
| halogens | all of the elements in group 17 |
| alkali metals | all of the elements in group 1 |
| metalliods | elements between metals |
| endothermic | chemical change that absorbs energy |
| exothermic | chemical reaction that releases energy |
