Ch. 6 Vocabulary
Terms
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- product
- a substance formed as a result of a chemical reaction
- physical property
- a characteristic of a pure substance that can be observed without changing it into another substance
- reactant
- a substance that undergoes change in a chemical reaction
- precipitate
- a solid that forms from a solution during a chemical reaction
- open system
- a system in which matter can enter from or escape to the surroundings
- coefficient
- a 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
- conservation of matter
- the principle stating that matter is not created or destroyed during a chemical reaction
- closed system
- a system in which no matter is allowed to enter or leave
- chemical equation
- a short, easy way to show a chemical reaction, using symbols
- chemical change
- a change in which one or more substances combine or break apart to form new substances
- chemistry
- the study of the properties of matter and how matter changes
- exothermic reaction
- a reaction that releases energy in the form of heat
- physical change
- a change in a substance that does not change its identity
- chemical property
- a characteristic of a pure substance that describes its ability to change into a different substance
- endothermic reaction
- a reaction that absorbs energy in the form of heat
- matter
- anything that has mass and occupies space