Metals and acids

Question 1

What are the tree important acids and their symbols?

Answer 1

Three important acids are:
Hydrochloric acid (HCI)
Sulfuric acid H2SO4
Nitric acid HNO3

Question 2

What is Zinc is used for and its property?

Answer 2

Zinc – used to make alloys (batteries,
electrical equipment, paint)
Property = shiny

Question 3

What are the three acids and their salts?

Answer 3

Acid :- Name of salt:-
Hydrochloric Chloride
Sulfuric Sulfate
Nitric Nitrate

Question 4

What is Sodium used for and its property?

Answer 4

Sodium – Used in street lights to make
them orange.
Property = Soft, shiny, reacts with water.

Question 5

Name the products in the reaction of a metal with acid?

Answer 5

A salt and hydrogen gas.
beacuse:
Metal + acid → salt + hydrogen

Question 6

How do you test for hydrogen gas?

Answer 6

A reaction in a test tube makes bubbles. How can you tell if the bubbles contain hydrogen gas?

1 Collect the gas by holding an empty test tube above the reaction test tube.

2 Light a splint

3 Hold the splint in the test tube that now contains the gas.

4 Listen . If the splint goes out with a squeaky pop, the gas is hydrogen .

The squeaky pop happens because hydrogen and oxygen react explosively The product is water .

hydrogen + oxygen → Water

Question 7

Name the reaction

Answer 7

Metal + acid → salt + hydrogen

Question 8

Magnesium+Hydrochloric acid→ Magnesium chloride+Hydrogen
1.What is the products of this reaction?
2.What are the reactants of this reaction?
3.Find the symbols to complete the reaction of
magnesium and hydrochloric acid
4. How will we know a reaction is happening?
5. What is the salt called in this reaction?

Answer 8

1.What is the products of this reaction?
-Magnesium chloride + Hydrogen
2.What are the reactants of this reaction?
-Magnesium + Hydrochloric acid
3.Find the symbols to complete the reaction of
magnesium and hydrochloric acid
-Mg+HCI→ MgCI+H
4. How will we know a reaction is happening?
-Bubbles formation
-color change
-temperature chnage
5. What is the salt called in this reaction?
Magnesium chloride (MgCI)

Question 9

Fill in the blank

Some metals do not react with dilute acids.Nothing happens if you add __, ___ or ___ to dilute hydrochloric acid.

Answer 9

Some metals do not react with dilute acids.Nothing happens if you add gold,silver or copper to dilute hydrochloric acid.

Question 10

reaction with different acids

Answer 10

ACID METAL SALT
hydrochloric iron iron chloride
hydrochloric Zinc Zinc chloride
hydrochloric Lead Lead chloride
nitric magnesium Magnesium Nitrate
Sulphuric iron Iron Sulphate
hydrochloric calcium Calcium chloride
sulphuric copper copper sulfate
nitric sodium Sodium nitrate
hydrochloric potassium Potassium chloride
sulphuric aluminium Aluminium sulphate