a simple molecular substance, with the formula NH₃, is a soluble, toxic, pungent gas at room temperature.

a base that dissolves in water; these solutions have a pH greater than 7

a description of a substance that has a sharply strong smell

a substance that is poisonous, and can cause harm or death to living organisms

a substance that causes damage by chemical action, often resulting in severe injury or destruction

Making ammonia

Chemistry

In the Rates and energy changes unit, pupils learned about how energy changes are always involved in reaction, along with a range of methods for measuring and comparing rates of reaction using properties of reactants and/or products.

This unit covers corrosion, prevention methods, and properties of alloys, ceramics, polymers, and metals. It explores industrial processes like the Haber process, fertiliser production, reaction rates, yields, atom economy, and the trade-offs involving conditions and equilibrium.

Industrial chemistry

Physical activity and equipment requiring safe use

A poisonous substance that causes harm or death to living organisms.

A substance that causes damage by chemical action.

A base soluble in water producing a solution with a pH greater than 7.

Match the following terms to the correct definition.

Hydrogen chloride reacts with ammonia to form ammonium chloride, NH₄Cl. Which of the following chemical equations shows this reaction correctly?

What does this hazard warning symbol tell you about a substance?

A student places a piece of damp red litmus paper in ammonia gas. Which of the following statements about this activity are correct?

Ammonia is a colourless gas at room temperature.

Which of the following are examples of chemical properties of ammonia?

Ammonia is a toxic gas. What control measures, or precautions, can be taken in a lab to limit the risk?

Which of the following statements about bases are correct?

Each atom's outer shell contains 5 electrons.

Each atom's outer shell contains 2 electrons.

Nitrogen can be found in Group 5, period 2 of the periodic table. What does this tell you about the electron configuration in nitrogen?

What term do we use in science to show that a substance is dissolved in water?

The ratio of hydrogen to chlorine is 4 : 1.

The ratio of nitrogen to chlorine is 1 : 1.

The ratio of hydrogen to nitrogen is 1 : 4.

The ratio of chlorine to nitrogen is 1 : 4.

Ammonium chloride has the formula NH₄Cl. Which of the following statements about the formula for ammonium chloride are correct?

What type of bonding forms an ammonia, NH₃, molecule?

Which of the following are examples of physical properties of a substance?

Content guidance

Risk assessment required - equipment

Adult supervision required

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