Analysis of Reactions

Question 1

How do group 1 metals react with water?

Answer 1

2M + 2H2O —-> 2MOH + H2 (general reaction)

For example -
2Li + 2H2O —–> 2LiOH + H2

Bases - alkali which have been dissolved in water

Question 2

How does Lithium (Group 1 Alkaline Metal) react with Water?

Answer 2

It floats in water and fizzes.
It reduces in size until it disappears
It floats around the surface of the water
Hydrogen is released
Upon adding indicator liquid it turns blue, indicating the metal hydroxide is an alkali

Question 3

How does Sodium (Group 1 Alkaline Metal) react with Water?

Answer 3

It floats in water and fizzes.
It moves in a zig-zag motion across the water’s surface
It sometimes ignites a yellow flame
Hydrogen is released
Upon adding indicator liquid it turns blue, indicating the metal hydroxide is an alkali

Question 4

How does Potassium (Group 1 Alkaline Metal) react with Water?

Answer 4

It floats and fizzes.
It sometimes ignites a lilac flame
Hydrogen is released
Upon adding indicator liquid it turns blue, indicating the metal hydroxide is an alkali

Question 5

How do group 1 metals react with hydrochloric acid?

Answer 5

2M + 2HCl —-> 2MCl + H2. (general reaction)

For example -
2Na + 2HCl —-> 2NaCl + H2

Question 6

How do group 2 metals react with water?

Answer 6

2M + 2H2O —-> 2M(OH)2 + H2 (general reaction)

For example -
2Ca + 2H2O —–> 2Ca(OH)2 + H2

Bases - alkali which have been dissolved in water

Question 7

How does Magnesium (Group 2 Alkaline Earth Metal) react with Water?

Answer 7

It doesn’t react with cold water.
Upon reacting with steam, a white light/flame and a white solid (precipitate) is produced

2Mg + 2H2O —–> 2Mg(OH)2 + H2

Question 8

How does Calcium (Group 2 Alkaline Earth Metal) react with Water?

Answer 8

Fizzing occurs. A slightly soluble white solid is creates, and some solids dissolve to form an alkali solution

2Ca + 2H2O —–> 2Ca(OH)2 + H2

Question 9

How do group 2 metals react with hydrochloric acid?

Answer 9

M + 2HCl —-> MCl2 + H2. (general reaction)

For example -
Mg + 2HCL —-> 2MgCl2 + H2

Question 10

How does Magnesium (Group 2 Alkaline Earth Metal) react with Hydrochloric Acid?

Answer 10

Fizzing occurs, and Hydrogen is produced.
The test tube becomes warm and the water turns white, and so does the magnesium strip.

Mg + 2HCl ——> MgCl2 + H2

Question 11

How does Calcium (Group 2 Alkaline Earth Metal) react with Hydrochloric Acid?

Answer 11

Stronger fizzing occurs, and Hydrogen is produced.
The test tube becomes warm

Ca + 2HCl ——> CaCl2 + H2