For this practical students make observations about dissolving, and plan and carry out an investigation to find out what makes sugar dissolve more quickly.
From a diagram of an experimental set up, students answer questions based on fair testing principles. Questions cover the control of variables, and measurement of results.
Describe methods for speeding up and slowing down melting of an ice cube using one of three provided objects, and explain why the methods would work. Assessment focus: planning an investigation.
This practical task requires students to describe to a partner their observations about an ice cube melting. Students then develop questions about what they observe.
For this practical task students complete a table of observations for the following substances: vinegar, baking soda, and vinegar and baking soda mixed together.
For this practical task students follow a plan to determine the best temperature for the reaction of rennet with milk. Students need to make observations and write a report on their findings.
Plan an investigation to find out which of two students' predictions is correct, and identify how to recognise what a result would look like. Assessment focus: identifying what to measure or compare to answer a science question.
Students read some information about testing the absorbency of different papers. They outline two features that need to be kept the same if the tests were to be fair.
Students are given information and a diagram about a drink bottle overflowing when it had been put into the freezer. Students are asked to explain why this happened and how they could prevent it.
Task: Describe what happens to ice in a glass of water, giving reasons, and explain where water forming on the outside of the glass comes from. Assessment focus: changes of state.
Students are asked to identify a solid, liquid, and a gas. They are also asked to write down two things that are generally true for each of these three states of matter.
For this practical task students use their knowledge about the properties of gases to explain their observations when they blow up a balloon that is inside a bottle and a balloon that is not inside a bottle.