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chem4 > CHEM4 > Flashcards

CHEM4 Flashcards

1
Q

Catalysts

A

substances that speed up chemical reactions

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2
Q

Metal properties

A

Shiny, malleable, ductile, conductive, and sometimes magnetic

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3
Q

Corrosion

A

the reaction with oxygen at the surface of a metal

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4
Q

Rusting

A

The corrosion of iron

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5
Q

Sodium + water ->

A

Sodium hydroxide + hydrogen

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6
Q

Alkali metals

A

Group 1 elements, which are very reactive metals

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7
Q

Metal + acid ->

A

salt + hydrogen

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8
Q

Effervescence

A

Effervescence

the production of a gas from a reaction in a liquid

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9
Q

Accuracy

A

how close a measurement is to the true value

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10
Q

Repeating an experiment makes it more…

A

Reliable

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11
Q

Anomalous result

A

A result that doesn’t fit in with the pattern of the other results in a set of data.

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12
Q

Calcium + nitric acid ->

A

Calcium nitrate + hydrogen

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13
Q

Lithium + hydrochloric acid ->

A

Lithium chloride + hyrdrogen

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14
Q

Pure metal

A

A metal that does not contain any other materials

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15
Q

Alloy

A

A metal with one or more elements added to improve it’s properties.

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16
Q

Melting point

A

The temperature at which a solid becomes a liquid

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17
Q

metal + oxygen ->

A

metal oxide

18
Q

what are the 3 reaction names when a metal combines with oxygen?

A

combustion, burning, oxidation

19
Q

If the metal oxide is soluble what will it most likely be?

A

basic

20
Q

Good conductors of heat

A

metal property

21
Q

Good conductors of electricity

A

metal property

22
Q

shiny

A

metal property

23
Q

ductile

A

metal property

24
Q

Malleable

A

metal property

25
Q

Strong and flexible

A

metal property

26
Q

solid with high melting points

A

metal property

27
Q

low melting points

A

non-metal property

28
Q

brittle (when solid)

A

non-metal property

29
Q

Not shiny

A

Non-metal property

30
Q

Poor conductors of heat

A

non-metal property

31
Q

Poor conductor of electritcy

A

non-metal property

32
Q

alkali metal + water ->

A

metal hydroxide + hydrogen

33
Q

oxide layer

A

prevents further corrosion of metal, meaning it can be used for doors and windows

34
Q

Conditions for rusting

A

water

35
Q

iron + oxygen + water ->

A

iron oxide

36
Q

metal + water ->

A

metal hydroxide + hydrogen

37
Q

Test for hydrogen gas?

A

squeaky pop test (splint in tube, if presnet burns with a pop)

38
Q

Reaction of metals in water from groups 1 and 2?

A

vigourous

39
Q

Top three most reactive metals

A
  1. Potassium 2. Sodium 3. Lithium
40
Q

Top three least reactive metals

A
  1. Gold 11. silver 10. copper
41
Q

Metals in-between Top three most and least reactive

A
  1. Calcium 5. Magnesium 6. Alumninium 7. Zinc 8. Iron 9. Lead

chem4 (4 decks)

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