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Assorted Chem Vocab
TAKS Chemistry Vocab for introduction
Question | Answer |
---|---|
Physical Change | a change that is made without changing the substance that has been change ex. painting, folding, melting, boiling |
Chemical Change | a change that causes the substance to change from its original form ex. respiration, digestion, burning |
Chemical equation | a statement that describes what is happening in chemical reaction usually uses symbols, coefficients and subscripts |
Gas | A substance that has no definite shape or volule |
Aqueous | When a substance is dissolved in water. Makes a solution. |
Density | The mass divided by the volume of a substance. |
Hypothesis | An educated guess |
Coefficient | A small whole number that is used to balanced equations and show mole ratios. |
Atom | The building block of all matter. |
Chemical reaction | When substances change, rearrange, bonding differently to make new substances. |