Year 7 chemistry


Learning Outcomes

Students must be able to:
-recognise the states of matter.
-explain melting, freezing, evaporation and condensation in terms of the particle theory
-explain the water cycle using the words evaporation, condensation and solar energy.
-state the properties of solids, liquids and gases.
-explain the change of state in terms of the particle theory.
-explain melting, freezing, evaporation and condensation in terms of the particle theory
-explain what happens when a soluble substance dissolves in water using the words solute and solvent.
-explain water's role in dissolving and transporting nutrients up the stems of plants.
-explain capillary action in terms of the structure of the water molecule and its charged ends,
-explain the unique properties of water as it condenses from a liquid into a solid.
-describe a way to recover pure salt from a mixture of salt, sand and water.
-describe the role of water in cooling
-describe a technique used to purify ethanol from wine.
-outline the process to separate a range of soluble and insoluble substances in a mixture,
-describe the properties of, hydrogen, oxygen or carbon dioxide gases and ways in which we can identify them. Link
Acids and bases
- identify an acid or a base with the use of a suitable indicator.
- recall that most indicators occur naturally and be able to conduct an activity to extract an indicator from red cabbage.
-describe some of the properties of acids and bases
-describe detergents as bases and identify uses of acids around the home.
-identify some common foods that are acidic
-define the pH scale as a scale from 0-14 where a pH <7 is acidic, 7 is neutral and >7 is basic.
-given the pH of a solution determine if a strong or weak acid or base is present.
-describe a neutralisation reaction as a reaction between an acid and a base that produces a salt and water.

The serpent as an example of oxygen gas production.
Exploding tin can, shows the energy released as hydrogen reacts with oxygen to produce water.
The bouncing ball
Reactivity of sodium in water
Oxygen gas igniting a candle.
Properties of carbon dioxide gas in extinquishing fires.
Properties of carbon dioxide in special effects

Recovery of copper metal from copper carbonate (breaking down a compound to obtain a pure element(Cu))
Electroplating metals
Making sparklers (Chemical reactions that involve rapid rusting and give off a great deal of heat)
Precipitation reactions (Colour change as an indication of a chemical reaction)
Making plastics such as slime
Yeast and the usefulness of their chemical reaction (The use of yeast and their chemical reaction in the kitchen)
Making a home battery. (Storing chemical energy for later use)
Making a simple oil and salt lava toy
( Using water soluble and insoluble substances to create a simple Lava toy)
Separation of mixtures:
-Thin film chromatography (Separation of inks)
-Lemonade a mixture of many substances. (separation of lemonade into some of its constituent compounds)
-Salt, sand and water.

Revision tests

Atomic structure

Chemical symbols

Particle theory

Elements, compounds and mixtures