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Flashcards in Chemistry Deck (270):
1

What is NaOH ?

Sodium hydroxide

2

Are Alkanes saturated ?

Yes

3

Formula for Hydrochloric acid

HCl

4

What is the the Realtive Formula Mass (Mr) of KOH ?

K=39 O=16

56

5

Which element has the symbol

Ag

Atomic Number 47

Silver

6

Formula for Zinc chloride

ZnCl2

7

Which element has the symbol

Ni

Atomic Number 28

Nickel

8

What are the first four alkanes ?

Ethene, Propene, Butene, Pentene

9

Lithium ions burn with what colour flame ?

Crimson

10

Symbol for Nitrogen

N

Atomic number 7

11

What is KOH ?

Potassium hydroxide

12

Formula for Ethanol

C2H5OH

13

Formula for Iodine

I2

14

nitrate

NO3-

15

What is K2CO3 ?

Potassium carbonate

16

What is the the Realtive Formula Mass (Mr) of NH3 ?

N=14

17

17

What is Mg(OH)3 ?

Magnesium hydroxide

18

Formula for Carbon monoxide

CO

19

If the mass appears to change in a reaction what is usually happening ?

A gas is being given off or used up

20

What is Ar ?

Argon gas

21

Potassium ions burn with what colour flame ?

Lilac

22

Formula for Bromine gas

Br2

23

Symbol for Gold

Au

Atomic number 79

24

chloride

Cl-

25

Symbol for Sodium

Na

Atomic number 11

26

Which element has the symbol

F

Atomic Number 9

Fluorine

27

Name the failry reactive metals in the middle of the reactivity series

Magnesium, Carbon, Zinc, Iron (Carbon is not a metal but usually included)

28

Test for carbonate

produces carbon dioxide if you add dilute acid (then test gas for with limewater)

29

What happens to the electorns in ionic bonds

They are transfered

30

Formula for Carbon monoxide

CO

31

What is the charge on a neutron

Zero / Neutral

32

What is the the Realtive Formula Mass (Mr) of CO ?

28

33

Formula for Iron III oxide

Fe2O3

34

Which element has the symbol

Li

Atomic Number 3

Lithium

35

Symbol for Uranium

U

Atomic number 92

36

Formula for Nitric acid

HNO3

37

Symbol for Lead

Pb

Atomic number 82

38

What is Ca(NO3)2 ?

Calcium nitrate

39

Isotopes of an element have different numbers of what ?

Neutrons

40

Symbol for Silver

Ag

Atomic number 47

41

Which element has the symbol

Cs

Atomic Number 55

Caesium

42

What is Li2O ?

Lithium oxide

43

Are Alkenes saturated ?

No

44

What is the the Realtive Formula Mass (Mr) of MgO ?

Mg=24 O=16

40

45

What is the the Realtive Formula Mass (Mr) of CH4 ?

16

46

Symbol for Lithium

Li

Atomic number 3

47

What is CaCO3 ?

Calcium carbonate

48

What is H2 ?

Hydrogen gas

49

What is the charge on an electron ?

-1

50

What is Cl2 ?

Chlorine gas

51

Formula for Methane

CH4

52

Formula for Hydrogen gas

H2

53

Formula for Silver nitrate

AgNO3

54

Which element has the symbol

Au

Atomic Number 79

Gold

55

Symbol for Neon

Ne

Atomic number 10

56

Copper ions burn with what colour flame ?

Green

57

iron (II) ion

Fe2+

58

What is MgCl2 ?

Magnesium chloride

59

Symbol for Caesium

Cs

Atomic number 55

60

What is O2 ?

Oxygen gas

61

Symbol for Zinc

Zn

Atomic number 30

62

What is C2H5OH ?

Ethanol

63

Formula for Sodium oxide

Na2O

64

What is I2 ?

Iodine

65

Which element has the symbol

I

Atomic Number 53

Iodine

66

Formula for Sodium chloride

NaCl

67

What is the the Realtive Formula Mass (Mr) of NaOH ?

Na=23 O=16

40

68

aluminum ion

Al3+

69

Calcium ions burn with what colour flame ?

orange-red (brick red)

70

What is AgNO3 ?

Silver nitrate

71

Which element has the symbol

Ar

Atomic Number 18

Argon

72

Symbol for Copper

Cu

Atomic number 29

73

Formula for Oxygen gas

O2

74

Symbol for Tin

Sn

Atomic number 50

75

What colour does phenophaein go in acids and alkalis

pink in alkalis, colourless in acids

76

What makes an acid strong ?

It ionises completely which means all acid molecules dissociate to release H+ ions

77

Which element has the symbol

He

Atomic Number 2

Helium

78

Copper ions burn with what colour flame ?

Green

79

What are typical properties of an ionic compound

High melting and boilong points, solid at room temperature, dissolve easily in water,conduct electricity whe melted ot in solution

80

What is MgO ?

Magnesium oxide

81

What is the relative mass of a proton ?

1

82

What are the products does of the complete combusion of hydrocarbons

Water and Carbon Dioxide

83

Potassium ions burn with what colour flame ?

Lilac

84

Formula for Magnesium chloride

MgCl2

85

Test for Hydrogen

A lighted wooden splint makes a squeaky pop in a test tube of hydrogen

86

Which element has the symbol

Pb

Atomic Number 82

Lead

87

Which element has the symbol

Sn

Atomic Number 50

Tin

88

sodium ion

Na+

89

Formula for Aluminum oxide

Al2O3

90

Formula for Ammonia

NH3

91

Test for Oxygen

A glowing wooden splint relights in a test tube of oxygen

92

oxide

O2-

93

phosphate ion

PO43-

94

If a reaction gives off heat where deos the energy come from ?

The formation of bonds between atoms

95

Symbol for Mercury

Hg

Atomic number 80

96

What is HNO3 ?

Nitric Acid

97

What is NO2 ?

Nitrogen dioxide

98

acid + metal hydroxide react to give

Salt + water

99

What is Pb(NO3)2 ?

Lead nitrate

100

What is Br2 ?

Bromine gas

101

What is K2O ?

Potassium oxide

102

Which element has the symbol

Si

Atomic Number 14

Silicon

103

Which element has the symbol

Xe

Atomic Number 54

Xenon

104

What is Na2CO3 ?

sodium carbonate

105

What is CO ?

Carbon monoxide

106

Symbol for Bromine

Br

Atomic number 35

107

What is CaO ?

Calcium oxide

108

What is the the Realtive Formula Mass (Mr) of Li2O ?

Li=7

30

109

Formula for Sodium hydroxide

NaOH

110

acid + metal oxide react to give

Salt + water

111

Calcium ions burn with what colour flame ?

orange-red (brick red)

112

What is the the Realtive Formula Mass (Mr) of CH3OH ?

O=16

32

113

What is Na2O ?

Sodium oxide

114

fluoride

F-

115

What is NH3 ?

Ammonia

116

Symbol for Potassium

K

Atomic number 19

117

A compound of a two non-metals will have what sort of bonds ?

Covelent (Example Carbon Dioxide, Methane, Water)

118

What is the the Realtive Formula Mass (Mr) of NO2 ?

N=14 O=16

46

119

What is FeO ?

Iron II oxide

120

If a reaction takes in heat (endothermic) where does the heat enery go ?

Into the breaking of bonds

121

Isotopes of an element have the same number of what ?

Protons and Electrons

122

Test for sulphates

produces white prcipitate if you add a few drops of dilute HCl followed by a few drops of barium chloride solution

123

What colour does methyl orange go in acids and alkalis

yellow in alkalis, red in acids

124

Symbol for Carbon

C

Atomic number 6

125

Symbol for Iron

Fe

Atomic number 26

126

Symbol for Chlorine

Cl

Atomic number 17

127

Test for Iodide

Yellow precipitate if you add a few drops of dlimute nitric acid and then a few drops of silver nitrate solution

128

Symbol for Fluorine

F

Atomic number 9

129

What is Fe2O3 ?

Iron III oxide

130

Which element has the symbol

Zn

Atomic Number 30

Zinc

131

What is KNO3 ?

Potassium nitrate

132

Which element has the symbol

Na

Atomic Number 11

Sodium

133

What is Fe2O3 ?

Iron oxide

134

What is HNO3 ?

Nitric acid

135

What is the the Realtive Formula Mass (Mr) of NaCl ?

Na=13 CL=35.5

58.5

136

Which element has the symbol

P

Atomic Number 15

Phosphorus

137

Formula for Nitric Acid

HNO3

138

Formula for Magnesium hydroxide

Mg(OH)3

139

magnesium ion

Mg2+

140

Formula for Nitrogen dioxide

NO2

141

What is the the Realtive Formula Mass (Mr) of K2O ?

K=39

94

142

Formula for Potassium chloride

KCl

143

What sort of structure do ionic compounds have

Giant Lattice (giant ionic latice)

144

Formula for Sodium sulphate

Na2SO4

145

Formula for Argon gas

Ar

146

What is HCl ?

Hydrochloric acid

147

Which element has the symbol

H

Atomic Number 1

Hydrogen

148

Symbol for Nickel

Ni

Atomic number 28

149

Test for Carbon Dioxide

turns limewater (calcium hydroxide solution) cloudy white

150

hydroxide

OH-

151

Formula for Iron oxide

Fe2O3

152

What is Cl2 ?

Chlorine gas

153

Formula for Potassium phosphate

KH2PO4

154

Symbol for Hydrogen

H

Atomic number 1

155

What is the the Realtive Formula Mass (Mr) of HNO3 ?

N=14 O=16

63

156

Which element has the symbol

Hg

Atomic Number 80

Mercury

157

Give four things a rate or reaction depends on

Temperature, concentration of a solutoin or pressure in a gas, surface area of a soild, presence of a catalyst

158

copper(I) ion

Cu+

159

Symbol for Xenon

Xe

Atomic number 54

160

Which element has the symbol

Al

Atomic Number 13

Aluminium

161

iodide

I-

162

Formula for Iron II oxide

FeO

163

Formula for Lithium oxide

Li2O

164

Formula for Sulfuric acid

H2SO4

165

Which element has the symbol

Ne

Atomic Number 10

Neon

166

What colour does litmus go in acids and alkalis

blue in alkalis, red in acids

167

What is KH2PO4 ?

Potassium phosphate

168

Lithium ions burn with what colour flame ?

Crimson

169

bromide

Br-

170

acid + metal carbonate react to give

Salt + water + carbon dioxide

171

Formula for Calcium oxide

CaO

172

What is the the Realtive Formula Mass (Mr) of O2 ?

32

173

What are the first four alkanes ?

Methane, Ethane, Propane, Butane

174

Symbol for Iodine

I

Atomic number 53

175

Which element has the symbol

Cl

Atomic Number 17

Chlorine

176

What is SO2 ?

Sulfur dioxide

177

Which element has the symbol

Cu

Atomic Number 29

Copper

178

What is the the Realtive Formula Mass (Mr) of H2 ?

2

179

What is the the Realtive Formula Mass (Mr) of H2SO4 ?

S=32

98

180

What is Ca(OH)2 ?

Calcium hydroxide

181

sulphate

SO42-

182

What is AgCl ?

Silver chloride

183

Which element has the symbol

Mg

Atomic Number 12

Magnesium

184

Formula for Potassium oxide

K2O

185

Formula for Potassium carbonate

K2CO3

186

What is NaCl ?

Sodium chloride

187

What is Al2O3 ?

Aluminum oxide

188

Test for Chloride

White precipitate if you add a few drops of dlimute nitric acid and then a few drops of silver nitrate solution

189

hydrogen ion

H+

190

A compound of a metal and a non-metal will have what sort of bonds ?

Ionic (example NaCl)

191

What is CO ?

Carbon monoxide

192

What is KCl ?

Potassium chloride

193

Which element has the symbol

U

Atomic Number 92

Uranium

194

lithium ion

Li+

195

Sodium ions burn with what colour flame ?

Yellow

196

What is CH4 ?

Methane

197

Test for alkene

Turns Bromine water from orange to clear

198

Test for chlorine

Bleaches damp litmus paper

199

Which element has the symbol

Fe

Atomic Number 26

Iron

200

Symbol for Cobalt

Co

Atomic number 27

201

calcium ion

Ca2+

202

What is H2SO4 ?

Sulfuric acid

203

silver ion

Ag+

204

What is the charge on an atom ?

Zero / Neutral

205

What is pH a measure of

The concetration of Hyrdogen ions (H+)

206

Do alkenes of alkanes have a double carbon to carbon bond ?

Alkenes

207

What is the the Realtive Formula Mass (Mr) of KCl ?

K=39 CL=35.5

74.5

208

Formula for Magnesium oxide

MgO

209

iron (III) ion

Fe3+

210

Which element has the symbol

S

Atomic Number 16

Sulfur

211

carbonate

CO32-

212

What happens to the electorns in covalent bonds

They are shared

213

Name the unreactive elements at the bottom of the reactivity series

Hydrogen, Copper

214

What is always conserved in a chemical reaction

Mass (and energy)

215

What is the the Realtive Formula Mass (Mr) of HCl ?

CL=35.5

36.5

216

What is the the Realtive Formula Mass (Mr) of MgCl2 ?

Mg=24 Cl=35.5

95

217

Formula for Sodium carbonate

Na2CO3

218

What is Na2CO3 ?

Sodium carbonate

219

What is the relative mass of a neutron ?

1

220

Formula for Sodium phosphate

Na3PO4

221

Symbol for Aluminium

Al

Atomic number 13

222

Which ion is responsible for acidity

Hydrogen (H+)

223

Formula for Phosphoric acid

H3PO4

224

copper(II) ion

Cu2+

225

Symbol for Phosphorus

P

Atomic number 15

226

What is the the Realtive Formula Mass (Mr) of Cl2 ?

CL=35.5

71

227

What is the the Realtive Formula Mass (Mr) of I2 ?

I=127

254

228

Formula for Calcium carbonate

CaCO3

229

Which element has the symbol

Br

Atomic Number 35

Bromine

230

Formula for Fluorine gas

F2

231

Formula for sodium carbonate

Na2CO3

232

Symbol for Sulfur

S

Atomic number 16

233

Formula for Methanol

CH3OH

234

Formula for Potassium nitrate

KNO3

235

Which element has the symbol

Ca

Atomic Number 20

Calcium

236

Formula for Silver chloride

AgCl

237

What is CH3OH ?

Methanol

238

Which element has the symbol

O

Atomic Number 8

Oxygen

239

Symbol for Argon

Ar

Atomic number 18

240

What is the relative mass of a electron ?

tiny (1/1860)

241

Formula for Potassium hydroxide

KOH

242

Formula for Chlorine gas

Cl2

243

potassium ion

K+

244

Which element has the symbol

N

Atomic Number 7

Nitrogen

245

What is the charge on a proton ?

1

246

Formula for Calcium hydroxide

Ca(OH)2

247

What elements are there in a hydrocarbon

Hydrogen and Carbon

248

Symbol for Helium

He

Atomic number 2

249

Which element has the symbol

K

Atomic Number 19

Potassium

250

Formula for Chlorine gas

Cl2

251

Which element has the symbol

C

Atomic Number 6

Carbon

252

Name the very reactive metals at the top of the reactivity series (in order)

Potassium, Sodium, Lithium, Calcium

253

What is F2 ?

Fluorine gas

254

What is ZnCl2 ?

Zinc chloride

255

zinc ion

Zn2+

256

What is Na2SO4 ?

Sodium sulphate

257

Symbol for Oxygen

O

Atomic number 8

258

ammonium ion

NH4+

259

What is H3PO4 ?

Phosphoric acid

260

Which element has the symbol

Co

Atomic Number 27

Cobalt

261

Lithium ions burn with what colour flame ?

Crimson

262

Symbol for Magnesium

Mg

Atomic number 12

263

Test for Bromide

Cream precipitate if you add a few drops of dlimute nitric acid and then a few drops of silver nitrate solution

264

Formula for Calcium nitrate

Ca(NO3)2

265

Formula for Sulfur dioxide

SO2

266

Symbol for Calcium

Ca

Atomic number 20

267

Formula for Lead nitrate

Pb(NO3)2

268

What is Na3PO4 ?

Sodium phosphate

269

Sodium ions burn with what colour flame ?

Yellow

270

Symbol for Silicon

Si

Atomic number 14