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science year 10 > chemistry 2 + valancies > Flashcards

chemistry 2 + valancies Flashcards

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1
Q

acid + metal hydroxide

A
  • salt + water
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2
Q

acid + metal oxide

A
  • salt + water
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3
Q

acid + carbonate

A
  • salt + water + carbon dioxide
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4
Q

acid + metal

A

= salt + hydrogen gas

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5
Q

acid + hydrogencarbonate

A
  • salt + water + carbon dioxide
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6
Q

react with water

A

K Na CA

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7
Q

react with steam

A

Mg, Al, Zn, Fe, Ni, Sn, Pb

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8
Q

no reaction with water or steam

A

Cu, Hg, Ag, Pt, Au

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9
Q

soluble

A

no precipitation is formed

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10
Q

insoluble

A

precipitation is formed

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11
Q

temperature

A
  • increasing the temp will increase the rate of reaction

- increases the speed of the particles therefore will collide more frequently

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12
Q

concentration

A

refers to the amount of particles present
increasing concentration will increase the rate of reCtion
- more particles present - more likely to collide

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13
Q

agitation

A

stirring reactants ensuring they keep in contact

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14
Q

catalysts

A
  • chemicals that speed up reactions but are not used up

- reduce the amount of energy required to convert reactants to products

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15
Q

precipitation

A

when 2 clear solutions react to produce an insoluble solid

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16
Q

ammonium

A

NH4+

17
Q

ethanoate

A

CH3COO-

18
Q

hydrogencarbonate

A

HCO3-

19
Q

hydroxide

A

OH-

20
Q

nitrate

A

NO3-

21
Q

carbonate

A

CO32-

22
Q

sul fate

A

SO42-

23
Q

sulfide

A

S2-

24
Q

phosphate

A

PO43-

25
Q

ethanoic acid

A

CH3COOH

26
Q

nitric acid.

A

HNO3

27
Q

sulfuric acid

A

H2SO4

28
Q

phosphoric acid

A

H3PO4

29
Q

hydrogen peroxide decomposition

A

h202 - h2o + o2

+ is on the other side

30
Q

fuel combustion

A

CH4 +o2 - co2 + h2o

31
Q

law of conversion of mass

A
  • mass is not created or destroyed

- mass of the products must be equal to the reactants

32
Q

electroplating

A

process of costing a metal with a thin layer of another metal by electrolysis to improve the metals corrosion resistance

33
Q

reaction rate

A

determines how fast or slow the reaction is

34
Q

reaction time

A

time taken to complete a reaction to a certain extent

35
Q

surface area

A

increasing surface area there are more collisions per unit

cursing things before the experiment

36
Q

pressure

A
  • increase the pressure by forcing them into a smaller space
  • collide more frequently
37
Q

acid + base

A
  • salt + water
38
Q

reactivity series

A

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science year 10 (8 decks)

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