3.x Conservation Of Mass (GCSE Chemistry)

The following is a GCSE Chemistry test covering '3.x Conservation Of Mass'

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If hydrogen (4g) reacts with oxygen (32g), how much water is produced?

Sodium carbonate (106g) reacts fully with calcium chloride (111g) producing calcium carbonate and sodium chloride. What`s the total mass of products?

What principle states that the total mass before a reaction equals the total mass afterward?

Iron combines completely with 32g of sulfur forming iron sulfide. If 56g of iron are used, what is the total mass of iron sulfide formed?

During a lab experiment, 50g of reactants are used. What mass of products should form according to the law of conservation of mass?

In a reaction 20g of reactants produce 20g of products. This demonstrates:

Potassium (3.9g) reacts with oxygen (3g) to form potassium oxide. What mass of potassium oxide results from this reaction?

If 3g of hydrogen completely reacts with 24g of oxygen, what is the mass of water formed?

If 28g nitrogen gas completely react with 6g hydrogen gas to form ammonia, what is the mass of ammonia produced?

If 2.8g of iron reacts completely with 1.6g of sulfur, how much iron sulfide is produced?

Lithium (7g) reacts with water (18g). How much lithium hydroxide and hydrogen gas are produced in total?

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