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Science 8 CA > Vocab Chapter 6 > Flashcards

Vocab Chapter 6 Flashcards

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Biology 101 flashcards
1
Q

To become different

A

Alter

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2
Q

A material that increases the rate of reaction by lowering the activation energy

A

Catalyst

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3
Q

A change in which one or more substances combine or break apart to form new substances

A

Chemical change

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4
Q

A short, easy way to show a chemical reaction, using symbols

A

Chemical equation

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5
Q

The study of properties of matter and how matter changes

A

Chemistry

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6
Q

A characteristic of a pure substance that describes the ability to change into a different substance

A

Chemical property

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7
Q

The minimum amount of energy needed to get a chemical reaction started

A

Activation energy

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8
Q

A system in which no matter is allowed to enter or leave

A

Closed system

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9
Q

The amount of one material in a certain volume of another material

A

Concentration

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10
Q

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

A

Coefficient

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11
Q

The principle stating that matter is not created or destroyed during a chemical reaction

A

Conservation of matter

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12
Q

A chemical reaction that breaks down compounds into simpler products

A

Decomposition

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13
Q

A reaction that absorbs energy in the form of heat

A

Endothermic reaction

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14
Q

A biological catalyst that lowers the activation energy of reactions in cells

A

Enzyme

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15
Q

A reaction that releases energy in the form of heat

A

Exothermic reaction

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16
Q

A material that decreases the rate of reaction

A

Inhibitor

17
Q

Anything that has mass and occupies space

A

Matter

18
Q

A system in which matter can enter from or escape to the surroundings

A

Open system

19
Q

A change in a substance that does not change the identity of the substance

A

Physical change

20
Q

A characteristic of a pure substance that can be observed without changing into another substance

A

Physical property

21
Q

A solid that forms from a solution during a chemical reaction

A

Precipitate

22
Q

A comprehensive and fundamental law, doctrine, or assumption

A

Principle

23
Q

Substance that undergoes change in a reaction

A

Reactant

24
Q

A reaction in which one element replaces another in a compound or when two elements in different compounds trade places

A

Replacement

25
Q

To demand as necessary or essential

A

Require

26
Q

A chemical reaction in which two or more simple substances combine to form a new, more complex substance

A

Synthesis

Science 8 CA (1 decks)

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