Writing Chemical Equations Practice

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Front

What is the product of the reaction between hydrogen gas and nitrogen monoxide gas?

Back

The products are water (H2O) and nitrogen gas (N2).

Front

List the 7 diatomic elements found in their pure form.

Back

Br, I, N, Cl, H, O, F.

Front

What is the chemical formula for zinc oxide?

Back

The chemical formula for zinc oxide is ZnO.

Front

What is the physical state of zinc oxide when produced from zinc powder and oxygen gas?

Back

The physical state of zinc oxide is solid (s).

Front

Write the balanced chemical equation for burning magnesium in oxygen.

Back

Mg + O2 → MgO (s).

Front

What does (s) indicate in a chemical equation?

Back

(s) indicates that the substance is in a solid state.

Front

What does (aq) indicate in a chemical equation?

Back

(aq) indicates that the substance is dissolved in water, forming an aqueous solution.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures that the law of conservation of mass is upheld, meaning the number of atoms of each element is the same on both sides.

Front

What are the products of the reaction between carbon dioxide and water in photosynthesis?

Back

The products are glucose (C6H12O6) and oxygen (O2).