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chem4 > end of year revision science > Flashcards

end of year revision science Flashcards

1
Q

A starting material in a chemical reaction

A

Reactants

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2
Q

Ending materials in a chemical reaction.

A

Products

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3
Q

word equation

A

an equation in which the reactants and products in a chemical reaction are represented by words

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4
Q

chemical equation

A

an equation that uses chemical formulas and symbols to show the reactants and products in a chemical reaction

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5
Q

Hydrocarbons

A

Compounds composed of only carbon and hydrogen

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6
Q

Limewater

A

test for carbon dioxide

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7
Q

Hydrogen + Oxygen ->

A

water

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8
Q

Hydrogen fuel cell

A

generates electricity by reacting hydrogen with oxygen

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9
Q

Oxidation

A

A chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust

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10
Q

metal + oxygen ->

A

metal oxide

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11
Q

Conservation of mass

A

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

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12
Q

Incomplete combustion

A

When a fuel burns in insufficient oxygen, producing carbon monoxide as a product.

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13
Q

Catalytic converter

A

a device that reduces carbon monoxide emissions from vehicles.

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14
Q

Chemical propertie

A

how a substance reacts with other substances

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15
Q

Acid rain

A

Rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water.

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16
Q

Chemical formula

A

shows the elements in the compound and the ratio of atoms

17
Q

Periodic Table

A

A chart of the elements showing the repeating pattern of their properties

18
Q

Alkali metals are in…

A

group 1

19
Q

Halogens are in………..

A

group 7

20
Q

Nobel gases are in………

A

group 8

21
Q

Melting point

A

The temperature at which a solid becomes a liquid

22
Q

Boiling point

A

The temperature at which a liquid changes to a gas

23
Q

Freezing point

A

The temperature at which a liquid changes into a solid

24
Q

Periods

A

Horizontal rows on the periodic table

25
Q
A

chem4 (4 decks)

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