Reactions of Metals and Water

• Science
• Secondary Education
• Age 12,13

Reaction of Metals with water

Lesson 4

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Reaction of Metals with water

Lesson 4

Reaction of Metals with water

Lesson 4

Recall of the previous lesson

• Exothermic reaction:

- heat is released to the outside to make chemical bonds and form NEW products

- the product becomes warmer 

- there is an increase in temperature

Recall of the previous lesson

• Endothermic reaction:

- heat is absorbed from the outside to break the chemical bonds to form NEW products

- the product becomes cooler 

- there is a decrease in temperature

Reaction of Metals with water

Lesson 4

Some metals may be difficult to see it react with water. What causes this?

1. layer of metal oxide on the metal's surface
2. The metal is reactive.
3. There's heat.
4. There's water.

Which material is used to clean the surface of rusted metals?

1. water
2. sandpaper
3. acid
4. salt

__________ and potassium react vigorously in water.

1. Mercury
2. Sodium
3. Iron
4. Gold

metal + water ______ + hydrogen

1. metal hydroxide
2. metal oxide
3. metal oxygen
4. hydrated oxygen

What gas is produced when a metal and water react?

1. oxygen
2. nitrogen
3. hydrogen
4. helium

Sodium and potassium have to be stored under _____ to prevent them from reacting with the steam in air?

1. water
2. wood
3. oil
4. concrete

sodium + water ___________ + hydrogen

1. sodium oxide
2. sodium hydroxide
3. sodium oxygen
4. sodium water

Some other metals like _______ and magnesium react less vigorously with water.

1. potassium
2. gold
3. calcium
4. sodium

In this reactant , water(g), what is meant by (g)?

1. water in the form of gas
2. water in the form of liquid
3. water in the form of solid
4. water in the form of gel

The word equation for the reaction of magnesium and steam is:
magnesium + water(g) _____ + hydrogen gas

1. magnesium oxide
2. magnesium hydroxide
3. magnesium oxygen
4. water vapour

Which one is hotter?

1. steam
2. water vapour

How is steam formed?

1. by melting ice at high temperatures
2. by boiling water at high temperatures

Gold metal reacts with water easily.

1. true
2. false

Reaction of Metals with water

Lesson 4

Explain, using particle theory, why the reaction between steam and magnesium is more vigorous than between water and magnesium.

Name 3 metals that do not react with water.

If an element is said to be "inert", what does it mean?

Reaction of Metals with water

Lesson 4

Rate your understanding of the lesson.

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