A piece of calcium is added to cold water.
Which equation represents the reaction?
Hydrogen
Quiz
•
Chemistry, Science
•
10th - 11th Grade
•
Hard
HS Talip
Used 44+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A piece of calcium is added to cold water.
Which equation represents the reaction?
Ca + H2O --> CaO + H2
Ca + 2H2O --> Ca(OH)2 + H2
2Ca + 2H2O --> 2CaOH + H2
Ca2+ + 2H2O --> Ca(OH)2 + 2H+
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement about hydrogen is not correct?
It gives a loud squeaky pop with a glowing splint.
It is formed when sodium metal reacts with cold water.
It is manufactured by cracking of an alkane.
It is used to make ammonia.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which substance produces hydrogen gas when it reacts with dilute hydrochloric acid?
magnesium
magnesium carbonate
magnesium hydroxide
magnesium oxide
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which metal does not react with dilute hydrochloric acid to give hydrogen?
copper
iron
magnesium
zinc
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which pair of substances does not produce hydrogen gas?
calcium and sulfuric acid
copper and water
sodium and water
zinc and hydrochloric acid
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which row describes a method for making hydrogen, a use of hydrogen, and a test for hydrogen?
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which tube is hydrogen formed?
A
B
C
D
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