Chemicla Reactions. Flashcards

1
Q

Process to rearrange atoms into new substances

A

Chemical reaction

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2
Q

Chemical symbols a numbers to represent a substance

A

Chemical formula

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3
Q

expression to show the relatinch p betwen reactants + produces

A

Chemical equations

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4
Q

substances that participate in a reaction (start)

A

Reactants

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5
Q

Substances formed in a reaction (end)

A

Products

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6
Q

mass can not be created or destroyed

A

Law of conservation of mass

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7
Q

energy can not be created or destroyee

A

Law dE Cunsevation of energy-

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8
Q

Reaction with an input of energy (photosynthesis)

A

Endothermic reaction

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9
Q

Reaction with an output of energy (feel heat from burning)

A

Exothermic reaction

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