Group 2

Question 1

Mg with oxygen

Answer 1

burns easily, bright white light

Question 2

Ca with oxygen

Answer 2

difficult to ignite, red flame

Question 3

Sr with oxygen

Answer 3

difficult to ignite, red flame

Question 4

Ba with oxygen

Answer 4

difficult to ignite, green flame

Question 5

Mg with water

Answer 5

vigorous reaction with steam, no reaction with water

Question 6

Ca with water

Answer 6

reacts moderately, forms a hydroxide

Question 7

Sr with water

Answer 7

Reacts rapidly, forms a hydroxide

Question 8

Ba with water

Answer 8

Reacts rapidly, forms a hydroxide

Question 9

Mg with dilute HCL

Answer 9

reacts vigorously

Question 10

Ca with dilute HCL

Answer 10

reacts vigorously

Question 11

Sr with dilute HCL

Answer 11

reacts vigorously

Question 12

Ba with dilute HCL

Answer 12

reacts vigorously

Question 13

Mg with dilute H2SO4

Answer 13

reacts vigorously

Question 14

Ca with dilute H2SO4

Answer 14

reaction slowed by the formation of a sparingly soluble sulfate layer on the metal, stopping hydrogen bubbles rising

Question 15

Sr with dilute H2SO4

Answer 15

reaction is quickly stopped by the formation of an insoluble sulfate layer on the metal

Question 16

Ba with dilute H2SO4

Answer 16

reaction is quickly stopped by the formation of an insoluble sulfate layer on the metal

Question 17

magnesium with steam

Answer 17

Mg (s) + H2O (g) → MgO (s) + H2 (g)

Question 18

metal with oxygen

Answer 18

2M (s) + O2 (g) → 2MO (s)

Question 19

sr and Ba with oxygen

Answer 19

2Sr (s) + O2 (g) → 2SrO (s)

Sr (s) + O2 (g) → SrO2 (s)

Question 20

metal with water

Answer 20

M (s) + 2H2O (l) → M(OH)2 (s) + H2 (g)

Question 21

metal with dilute HCl

Answer 21

M (s) + 2HCl (aq) → MCl2 (aq) + H2 (g)

Question 22

metal with dilute H2SO4

Answer 22

M (s) + H2SO4 (aq) → MSO4 (aq) + H2 (g)

Question 23

metal oxide with water

Answer 23

MO (s) + H2O (l) –> M(OH)2 (aq)

Question 24

group 2 hydroxide with dilute HCl

Answer 24

M(OH)2 (s) + 2HCl (aq) –> MCl2 (aq) + 2H2O (l)

Question 25

group 2 hydroxide with dilute H2SO4

Answer 25

M(OH)2 (s) + H2SO4 --> MSO4 (aq) + 2H2O (l)

Question 26

group 2 carbonate with dilute HCl

Answer 26

MCO3 (s) + 2HCl (aq) --> MCl2 (aq) + H2O (l) + CO2 (g)

Question 27

group 2 carbonate with dilute H2SO4

Answer 27

MCO3 (s) + H2SO4 (aq) --> MSO4 (aq) + H2O (l) + CO2 (g)

Question 28

equation for magnesium for medical use

Answer 28

Mg(OH)2 (s) + 2HCl (aq) → MgCl2 (aq) + 2H2O (l)

Question 29

equation for Mg in extraction of Ti

Answer 29

TiCl4 (g) + 2Mg (l) → Ti (s) + 2MgCl2 (l)

Question 30

equation for Cl to produce TiCl4

Answer 30

TiO2 (s) + 2C (s) + 2Cl2 (g) → TiCl4 (g) + 2CO (g)