Unit 2: Chemical Reactions

Flashcard
•
Science
•
8th Grade
•
Hard
Amber Sutton
FREE Resource
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18 questions
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1.
FLASHCARD QUESTION
Front
Chemical equation
Back
A representation of a chemical reaction using chemical symbols, numbers, and a symbol ( → ).
2.
FLASHCARD QUESTION
Front
Chemical reaction
Back
The rearrangement of atoms to form new substances with different properties.
3.
FLASHCARD QUESTION
Front
Law of conservation of mass
Back
A scientific law that states that matter cannot be created or destroyed; the atoms that make up matter can only be rearranged into different combinations.
4.
FLASHCARD QUESTION
Front
Atom
Back
The smallest unit of matter that retains the chemical identity of the element.
5.
FLASHCARD QUESTION
Front
Chemical change
Back
A type of change in which a new substance is made from one or more previous substances; occurs during a chemical reaction; a change where the atoms of the original substances are rearranged to make new elements and/or compounds.
6.
FLASHCARD QUESTION
Front
Chemical formula
Back
Represents the type and number of atoms present in a particular substance.
7.
FLASHCARD QUESTION
Front
Coefficient
Back
A whole number written in front of a chemical formula that indicates how many molecules of that substance are involved in a chemical reaction.
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