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Course: Alhussan Chemistry — Stage 8
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Alhussan Chemistry — Stage 8

Chapter 7: Inside Atoms

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Chapter 8: Pure Substances and Solutions

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Chapter 9: Chemical Reactions 2

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Chemistry 9.11 Chapter 9 Review: Chemical Reactions 2 — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Potassium is the ____ reactive common metal.
most
fairly
least
not
2.
Hydrogen made by metals in acid in 1 minute. What is the value for Iron?
Dr Dabour Hub Academy - figure 1
12
2
60
28
3.
Metal carbonate → metal oxide + ____.
carbon dioxide
water
hydrogen
oxygen
4.
Energy in foods (kJ per 100 g). Which has the greatest value?
Dr Dabour Hub Academy - figure 2
Cashew nuts
Bread
Rice
Oil
5.
Magnesium burns with a bright ____ flame.
blue
red
white
green
6.
True or false? Metal + oxygen → metal oxide.
True
False
7.
True or false? A lid and insulation reduce heat loss in calorimetry.
True
False
8.
Temperature rise of 100 g water from 1 g of fuel. About how many times bigger is Butanol than Methanol?
Dr Dabour Hub Academy - figure 3
2.4
3.2
1.6
0.8
9.
Which term matches this definition? “Metal like gold or copper that hardly reacts.”
Unreactive metal
Chromatography
Lilac
Solubility
10.
Energy transferred (J) = mass of water (g) × ____ × temperature rise (°C).
1000
4.2
9.8
100
11.
Temperature rise when metals react with acid. Which has the greatest value?
Dr Dabour Hub Academy - figure 4
Magnesium
Zinc
Copper
Iron
12.
Which is the correct definition of “Unreactive metal”?
Metal like gold or copper that hardly reacts.
Gaining oxygen.
Compound formed from an acid.
Compound of a metal with oxygen.
13.
Which statement is NOT correct?
Energy = 4.2 × mass × temperature rise.
Metal carbonate → metal oxide + carbon dioxide.
Combustion: fuel + oxygen → oxides.
Copper displaces zinc.
14.
Energy = 4.2 × mass × ____.
temperature rise
volume
density
time
15.
Energy = 4.2 × 50 g × 10 °C. Energy in J?
2100 J
42 J
210 J
500 J
16.
Exothermic reactions ____ energy.
create
destroy
release
absorb
17.
Which term matches this definition? “Gas made by metals with water or acids.”
Leaded petrol
Hydrogen
Sulfuric acid
Weathering
18.
True or false? Metal + acid gives CO2.
True
False
19.
200 g of water rose by 15 °C. How many joules were transferred?
12,600 J
13 J
855 J
3000 J
20.
Which statement is NOT correct?
Copper does not react with dilute acid.
A more reactive metal displaces a less reactive one.
Hydrochloric acid makes chlorides.
Combustion is endothermic.
21.
Which term matches this definition? “Compound of a metal with oxygen.”
Concentration
Lead-acid battery
Effervescence
Metal oxide
22.
True or false? Gold is very reactive.
True
False
23.
Temperature rise of 100 g water from 1 g of fuel. What is the total of all the values?
Dr Dabour Hub Academy - figure 5
107
120
133
35
24.
60 cm³ of hydrogen in 30 s. Mean rate?
90.0 cm³/s
1800.0 cm³/s
0.5 cm³/s
2.0 cm³/s
25.
True or false? Potassium is the most reactive common metal.
True
False
26.
Which reaction in the table is endothermic?
Dr Dabour Hub Academy - figure 6
B
A
D
C
27.
Which is the correct definition of “Hydrogen”?
More reactive metal replaces a less reactive one.
Gas made by metals with water or acids.
Metals from most to least reactive.
Non-metal placed in the series, used to extract metals.
28.
Energy = 4.2 × 100 g × 30 °C. Energy in J?
12,600 J
420 J
3000 J
126 J
29.
True or false? Metal + water → metal hydroxide + hydrogen.
True
False
30.
Which statement is NOT correct?
Heat loss makes calorimetry values too low.
Magnesium burns with a bright white flame.
Sodium sinks in water.
Thermal decomposition breaks compounds down using heat.
31.
True or false? Sodium floats and fizzes on water.
True
False
32.
Breaking bonds needs 1800 kJ; making releases 2400 kJ. Overall released?
−600 kJ
600 kJ
4200 kJ
2400 kJ
33.
Which statement is correct?
Carbonates gain mass on heating.
Bond making needs energy.
Energy = 4.2 × mass × temperature rise.
Metal + acid gives CO2.
34.
True or false? Carbonates gain mass on heating.
True
False
35.
Which term matches this definition? “Metal reacting slowly with air or water.”
Copper
Corrosion
Lead
Chromatography
36.
Which is the correct definition of “Alkali metal”?
Turns purple in strong alkali.
Metal that reacts steadily with cold water.
Group 1 metal that reacts vigorously with water.
Radiation shielded by dense lead.
37.
Using the reactivity cards, which metal is in the middle group?
Dr Dabour Hub Academy - figure 7
Copper
Potassium
Gold
Zinc
38.
Metal + oxygen → metal ____.
salt
chloride
oxide
hydroxide
39.
Which term matches this definition? “A more reactive metal pushing out a less reactive one.”
Displacement
Rate
Vigorous
Steam
40.
Which statement is correct?
Sodium sinks in water.
Metal + acid gives CO2.
Bond making needs energy.
Exothermic reactions release energy.
41.
Hydrogen made by metals in acid in 1 minute. Which has the greatest value?
Dr Dabour Hub Academy - figure 8
Lead
Iron
Zinc
Magnesium
42.
Which statement is NOT correct?
Energy = 4.2 × mass × temperature rise.
Carbonates gain mass on heating.
Lead is toxic.
Fat releases more energy per gram than carbohydrate.
43.
Breaking bonds needs 2650 kJ; making releases 3460 kJ. Overall released?
6110 kJ
3460 kJ
810 kJ
−810 kJ
44.
Fat releases ____ energy per gram than carbohydrate.
no
more
equal
less
45.
True or false? Sodium sinks in water.
True
False
46.
Which is the correct definition of “Reactivity series”?
Dense, soft, grey metal low in the reactivity series.
Compound of a metal with oxygen.
Compound formed from an acid.
Metals listed from most to least reactive.
47.
Breaking bonds needs 2650 kJ; making releases 2400 kJ. Overall released?
2400 kJ
5050 kJ
−250 kJ
250 kJ
48.
Hydrogen burns with a squeaky ____.
glow
hiss
pop
whistle
49.
True or false? Heat loss makes calorimetry values too low.
True
False
50.
True or false? Breaking bonds needs energy.
True
False
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Part of Chapter 9: Chemical Reactions 2 — see every lesson and quiz in this unit.
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