Kitchen changes 0 Overview Connecting to the Curriculum Marking Student Responses Further Resources This task is about using definitions to give examples of temporary and permanent change. Question 1Change answer Temporary changes happen when materials change, but you can get back what you started with. Sometimes there is a temporary change when there is a change of state, e.g., melted wax goes back to solid wax when it cools. Sometimes there is a temporary change when materials are mixed, e.g., when you mix salt and water, they don't form a new substance so you can separate them again. Give two examples of temporary changes that happen in the kitchen. Temporary changes happen when materials change, but you can get back what you started with. Sometimes there is a temporary change when there is a change of state, e.g., melted wax goes back to solid wax when it cools. Sometimes there is a temporary change when materials are mixed, e.g., when you mix salt and water, they don't form a new substance so you can separate them again. Give two examples of temporary changes that happen in the kitchen. Question 1Change answer Permanent changes happen when there is a chemical reaction and new substances are formed. You cannot get back the original sustance, e.g., when you heat egg white you cannot get back the raw egg white. Give two examples of permanent changes that happen in the kitchen. Permanent changes happen when there is a chemical reaction and new substances are formed. You cannot get back the original sustance, e.g., when you heat egg white you cannot get back the raw egg white. Give two examples of permanent changes that happen in the kitchen. Levels: 3, 4 Curriculum info: Science, Understanding about science, Material World Keywords: temporary changes, permanent changes Description of task: Students are given the definitions for permanent and temporary change. The students then give two examples from the kitchen of each type of change. Curriculum Links: Science capabilities The capabilities focus is brought about by the conversations you have and the questions you ask. Capability: Use evidence This resource provides opportunities to discuss using provided information to inform explanations/decisions. Science capability: Use evidence (TKI) Science capabilities: Use evidence Making Better Sense: Permanent and Temporary Change Answers/responses: Y8 (09/1998) a) Any 2 of: Ice freezing. Tea towel getting wet. Water being heated. Any answer that is a temporary change and can be reversed. 2 correct – difficult 1 correct – moderate b) Any 2 of: Cake being cooked. Toast being made. Any other answer that is a change that cannot be reversed as it involves a chemical reaction. 2 correct – very difficult 1 correct – moderate Temporary or permanent? Mixing it up
