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chemistry > C1 > Flashcards

C1 Flashcards

1
Q

name the 3 states of matter

A

solid, liquid, gas

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2
Q

what are the particles doing in a solid

A

they are vibrating fasten fixed positions

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3
Q

what are the particles doing in a liquid

A

they have some movement but a lot and flow to the bottom of the container

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4
Q

what are the particles doing in a gas

A

they are moving freely every where and the hotter they get the more energy they gain

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5
Q

how to go from solid to liquid

A

melting

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6
Q

how to go to gas from liquid

A

boiling

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7
Q

how to go gas to liquid

A

condensing

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8
Q

how to go from liquid to solid

A

freezing

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9
Q

what is an endothermic reaction

A

energy is taken from the surroundings usually shown by a fall in temperature

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10
Q

what is an exothermic reaction

A

energy is given out to surroundings usually shows in rise in temperature

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11
Q

what must be supplied to break bonds

A

energy

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12
Q

formula for photosynthesis

A

carbon dioxide + water => glucose + oxygen

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13
Q

what does oxidation mean??

A

the addition of oxygen to a substance in a reaction

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14
Q

what is the formula for complete combustion

A

hydrocarbon + oxygen => carbon dioxide + water

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15
Q

how are nitrogen oxides created

A

reaction between nitrogen and oxygen in the air

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16
Q

what greenhouse gases keep the earth warm

A

carbon dioxide, methane and water vapour

17
Q

what is climate change including

A

the rise in CO2 and other greenhouse gases in the atmosphere

18
Q

what are 4 common test for gases

A

litmus paper, glowing splint, lime water and bubbles, squeaky pop

19
Q

reaction for fuel cells

A

hydrogen + oxygen => water

20
Q

what is a fuel cell

A

it is a electrical cell that’s supplied with fuel and oxygen and uses energy from it to produce electricity efficiently

21
Q

advantages of fuel cells

A

they are produced by reactions and are reliable

22
Q

what is potable water mean

A

water that you can drink

chemistry (5 decks)

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