Term
|
Definition
| The variable that affects the results of the experiment (only variable that is changed) |
|
|
Term
|
Definition
| the variable that is affected by the experiment (the results) |
|
|
Term
| Controlled/Control Variable |
|
Definition
| The variables that stay the same with every test |
|
|
Term
|
Definition
| properties that are measured without changing the composition of a substance (e.g. colour, conductivity,malleability, etc) |
|
|
Term
|
Definition
| properties that describe the ability of a substance to react and/or form new substances (e.g. producing a gas during a reaction, reacting with acids, bases, or water, changing colour during a reaction, etc) |
|
|
Term
|
Definition
| recognizing/noting a fact/occurence |
|
|
Term
|
Definition
| a conclusion based on observations |
|
|
Term
|
Definition
| An observation that looks at the qualities of an object or event (e.g. colour, size, age [NON NUMERICAL]) |
|
|
Term
|
Definition
| number-based observations (exact temperature, length, age) |
|
|
Term
|
Definition
| an educated guess based on observations and your knowledge of the subject |
|
|
Term
| What are the characteristics of physical changes? |
|
Definition
- no bonds between atoms/molecules are broken/formed
- elements/compounds that were there at the beginning of the change are still there at the end
examples: changing matter state (solid to liguid), seperating a mixture, cutting something into smaller pieces, etc |
|
|
Term
| What are the characteristics of chemical changes? |
|
Definition
- bonds between molecules/atoms are broken and/or formed
- new substances are created
Examples: burning paper, burning natural gas in a furnace, formation of rust, etc |
|
|
Term
|
Definition
| a solution of two or more metals |
|
|
Term
|
Definition
| a measure of how much mass is contained in a unit volume |
|
|
Term
|
Definition
| how easily a solid can be stretched into a wire |
|
|
Term
|
Definition
| how easily a solid can be shaped with force |
|
|
Term
|
Definition
| a solid forming from a liquid |
|
|
Term
|
Definition
| how easily a substance dissolves in another |
|
|
Term
|
Definition
| how resistant a fluid is to flow |
|
|
Term
|
Definition
basic building blocks of matter, made up of three different particles
- protons(positive): 1 AMU, found in nucleus of the atom
- neutrons(neutral): 1 AMU, found in nucleus
- Electrons(negative): orbit the nucleus, almost no mass, charge is equal in size to a proton's |
|
|
Term
|
Definition
|
|
Term
|
Definition
| made up of two or more elements that are chemically bonded with a fixed ratio, forms a new substance with new properties |
|
|
Term
|
Definition
| pure substance that can't be broken down any further into simpler substances |
|
|
