YEAR 9 CHEMISTRY END OF SEMESTER 1 EXAM

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YEAR 9 CHEMISTRY END OF SEMESTER 1 EXAMS 1. Complete the table by deciding if the information indicates that the element is a metal or a non-metal. (5) 2. Look at the table. It shows the melting points and boiling points of some elements. Use the table to answer these questions. (a) Write down the name of the element that melts at 1538°C. (1) (b) Which element is a liquid at room temperature (20°C)? (1) (c) Which element is a non-metal? (1) 3. Hydrogen peroxide is used to make oxygen in the laboratory. Hydrogen peroxide breaks down to form water and oxygen. (a) This reaction is much faster when a chemical called manganese(IV) oxide is added to the hydrogen peroxide. The manganese(IV) oxide is unchanged at the end of the reaction. What type of chemical is manganese(IV) oxide?

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