3.x Conservation Of Mass (GCSE Chemistry)

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

Lead nitrate decomposes completely into lead oxide, nitrogen dioxide and oxygen. If the mass of lead nitrate is 33.1g, what will be the combined mass of the products?

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?

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

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

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?

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

Magnesium reacts with chlorine to produce magnesium chloride. If 48g of magnesium reacts completely with 142g of chlorine, what will be the total mass of magnesium chloride produced?

If 5g of hydrogen reacts completely with 40g of chlorine, what mass of hydrogen chloride is formed?