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Unit 4 Chemical Reactions

Across
Conservation of matter states: the number of _______ before and after a chemical reaction stay the same
Change in this can be a sign of a chemical reaction.
Matter can not be created or destroyed. _____ of matter/mass
Chemical reactions that give off heat/energy
When temperatures are colder matter is more _______
In an endothermic reaction the temperature of _______ is colder
Energy is used in chemical reactions to break bonds in _____
Down
The process in which atoms of one or more substances rearrange to form a new substance(s) is this type of reaction.
An attraction between two atoms when electrons are transferred or shared.(2words)
More ______(2words) will allow for quicker chemical reaction rates.
The substances formed in a chemical reaction.