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Question 1.3   Write true or false for these statements: a)  Gases can be squashed. [ans1] b)  Solids can change shape on their own. [ans2] c)  Gravity keeps liquids at the bottom of a container. [ans3] d)  Gases don’t weigh anything. [ans4] (4)

QUESTION 2 Answer the following questions regarding gases:

Question 1.4.4   Draw a diagram to show how the particles behave in each state of matter. Remember to add headings. Upload Image Here (6)

Question 4.3.2   As well as underground water, name one other place the water naturally comes from to go into the sea. (1)

Question 2.1.2   This same gas in question 2.1 was called ‘heavy air’ can be cooled to a solid at -78⁰C, and it becomes a solid. What is it called when it is a solid? [ans1] (1)

(Part Assignment) Complete the cell G10, which is for the total cost. Use the relative cell reference (No $). No space in the formula. =[G10]

Question 1.2   If you put something in a container, how would you tell if it was a liquid? (1)

A binding constraint means that the constraint is exactly satisfied, and its left-hand side (LHS) does not equal its right-hand side (RHS).

Question 4.3.3   What is the scientific name for rain, snow and other forms of water that fall from clouds? [ans1] (1)

Question 2.1.3   What is it used for as a solid? (1)