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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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Quiz

Chemistry 9.7 Metals and water — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Hydrogen burns with a squeaky ____.
bang only
hiss
pop
glow
2.
Which term matches this definition? “Group 1 metal that reacts vigorously with water.”
Sulfuric acid
Metal oxide
Alkali metal
Sodium hydroxide
3.
Calcium reacts ____ with cold water.
not at all
explosively
steadily
only when frozen
4.
50 cm³ of hydrogen in 60 s. Mean rate?
0.83 cm³/s
3000.00 cm³/s
110.00 cm³/s
1.20 cm³/s
5.
Hydrogen from calcium in water. What is the value of "Hydrogen (cm³)" when "Time (s)" is 20?
Dr Dabour Hub Academy - figure 1
18
42
32
0
6.
True or false? Copper reacts quickly with water.
True
False
7.
Sodium (23 g) makes 1 g of hydrogen. Hydrogen from 46 g of sodium?
2.0 g
46.0 g
1058.0 g
23.0 g
8.
Which safety measure is needed with alkali metals?
Store in water
Small pieces and a safety screen
Touch with bare hands
Large pieces
9.
Sodium whizzes around the ____.
air
sides only
surface
bottom
10.
Lithium took 60 s and potassium 4 s. How many times faster is potassium?
64 times
150 times
15 times
56 times
11.
Time for metals to disappear in water. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
12.
Lithium took 60 s and potassium 3 s. How many times faster is potassium?
200 times
57 times
63 times
20 times
13.
Which is the correct definition of “Metal hydroxide”?
Compound formed when a metal reacts with water.
Test result for hydrogen.
Fast and energetic.
Alkali metal that burns with a lilac flame on water.
14.
True or false? The solution made from sodium and water turns universal indicator red.
True
False
15.
50 cm³ of hydrogen in 40 s. Mean rate?
90.00 cm³/s
0.80 cm³/s
1.25 cm³/s
2000.00 cm³/s
16.
True or false? Alkali metals are stored in water.
True
False
17.
42 cm³ of hydrogen in 100 s. Mean rate?
2.38 cm³/s
0.42 cm³/s
4200.00 cm³/s
142.00 cm³/s
18.
Metals used for taps do ____ react with water.
explosively
slowly
readily
not
19.
pH of water after adding metals. Which has the smallest value?
Dr Dabour Hub Academy - figure 3
Lithium
Sodium
None
Calcium
20.
Which statement is NOT correct?
Sodium floats on water.
Sodium sinks in water.
Sodium + water → sodium hydroxide + hydrogen.
Metals that react vigorously with oxygen also react vigorously with water.
21.
Which term matches this definition? “Turns purple in strong alkali.”
Copper oxide
Gamma rays
Thermal decomposition
Universal indicator
22.
Metals that react vigorously with oxygen also react vigorously with ____.
plastic
gold
water
glass
23.
Which term matches this definition? “Metal that reacts steadily with cold water.”
Calcium
Gold
Lead poisoning
Tarnish
24.
Which is the correct definition of “Potassium”?
Group 1 metal that reacts vigorously with water.
Alkali metal that burns with a lilac flame on water.
Separating dissolved substances on paper.
Poisonous.
25.
True or false? Metals that react with water form a hydroxide and hydrogen.
True
False
26.
True or false? Sodium sinks in water.
True
False
27.
Which metal sets fire to the hydrogen with a lilac flame?
Potassium
Lithium
Sodium
Calcium
28.
Hydrogen from calcium in water. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 4
A
B
C
D
29.
Hydrogen from calcium in water. At what value of "Time (s)" is "Hydrogen (cm³)" greatest?
Dr Dabour Hub Academy - figure 5
20
80
0
100
30.
Reaction of metals with water (score 0–5). What is the total of all the values?
Dr Dabour Hub Academy - figure 6
5
18
12
15
31.
Hydrogen from calcium in water. Between which two values of "Time (s)" did "Hydrogen (cm³)" change the most?
Dr Dabour Hub Academy - figure 7
0 and 20
60 and 80
40 and 60
80 and 100
32.
Sodium (23 g) makes 1 g of hydrogen. Hydrogen from 11.5 g of sodium?
264.5 g
11.5 g
0.5 g
−11.5 g
33.
Which statement is NOT correct?
Magnesium reacts very slowly with cold water but quickly with steam.
Sodium floats on water.
Calcium reacts steadily with cold water.
The solution turns indicator red.
34.
The cards show four metals. Which order is correct from MOST to LEAST reactive?
Dr Dabour Hub Academy - figure 8
S, P, R, Q
Q, P, S, R
R, Q, S, P
P, S, Q, R
35.
Which statement is NOT correct?
Reactivity of Group 1 increases down the group.
Metal + water gives oxygen.
Iron reacts with steam to form iron oxide and hydrogen.
Sodium melts into a ball.
36.
Time for metals to disappear in water. What is the total of all the values?
Dr Dabour Hub Academy - figure 9
69
78
60
87
37.
Which statement is NOT correct?
Magnesium reacts vigorously with cold water.
Magnesium reacts very slowly with cold water but quickly with steam.
Metals that react with water form a hydroxide and hydrogen.
Potassium burns with a lilac flame.
38.
Lithium took 60 s and potassium 2 s. How many times faster is potassium?
62 times
58 times
300 times
30 times
39.
What are the products of a metal reacting with water?
Metal hydroxide and hydrogen
Salt and water
Metal oxide and oxygen
Metal and water
40.
Which is the correct definition of “Squeaky pop”?
Radiation shielded by dense lead.
Test result for hydrogen.
Non-metal placed in the series, used to extract metals.
Metals from most to least reactive.
41.
Alkali metals are stored under ____.
oil
acid
air
water
42.
True or false? Magnesium reacts very slowly with cold water but quickly with steam.
True
False
43.
Which term matches this definition? “Compound formed when a metal reacts with water.”
Steam
Effervescence
Metal hydroxide
Sulfuric acid
44.
True or false? Magnesium reacts vigorously with cold water.
True
False
45.
Hydrogen from calcium in water. Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 10
"Hydrogen (cm³)" increases as "Time (s)" increases
"Hydrogen (cm³)" decreases as "Time (s)" increases
"Hydrogen (cm³)" rises to a peak at 100, then falls
"Hydrogen (cm³)" stays the same
46.
Gold does ____ react with water.
readily
not
slowly
explosively
47.
Reactivity of Group 1 ____ down the group.
increases
decreases
stays
stops
48.
Which term matches this definition? “A metal + water → metal hydroxide + hydrogen reaction is shown by which metal sinking and bubbling, making cloudy water?”
Iron
Calcium
Copper
Gold
49.
Which statement is correct?
Magnesium reacts very slowly with cold water but quickly with steam.
Magnesium reacts vigorously with cold water.
Copper reacts quickly with water.
Metal + water gives oxygen.
50.
True or false? Metals used for taps do not react with water.
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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