Reactions of Metals and Dilute Acid

• Science
• Secondary Education
• Age 12,13

Reaction of Metals with Dilute Acids

Lesson 5

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Reaction of Metals with Dilute Acids

Lesson 5

Recall of the previous lesson

oxygen + sodium  -> _________ + ________

oxygen + magnesium -> _______ + ________

oxygen + iron -> _______ + ________

water + potassium -> _______ + ________

water + calcium -> _______ + ________

magnesium + steam  -> _______ + ________

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 violently 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 sodium 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

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

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

Reaction of Metals with Dilute Acids

Lesson 5

What is the word equation for the reaction of magnesium with dilute hydrochloric acid?

magnesium + hydrochloric acid ______ + _____

1. magnesium chloride + water
2. magnesium chloride + hydrogen

Magnesium chloride is an example of a ________.

1. salt
2. acid

When a metal reacts with
an acid, the products are a salt and ______________.

1. metal hydroxide
2. hydrogen gas
3. metal oxide

The general equation for the reaction of a metal and an acid is:

metal + acid metal acid + hydrogen

1. TRUE
2. FALSE

Group Activity

• Write the word equation for the reaction between magnesium and sulfuric acid.
• What is the salt produced in the reaction in question 1?
• Describe what you would observe if this reaction took place in a test tube.
• Write the word equation for the reaction between zinc and nitric acid.

Rate your understanding of the lesson.

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