| In your jotter write the DATE in the margin. Now add a TITLE for your homework. Your title should be the name of the Homework: Chemical Changes Homework Week 4 |
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| Question 1. | |
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| Question 2. | |
| In a class, a student accidentally poured sulphur into a jar of iron filings. She decided it would be easiest to separate the two using a magnet. This method would work because | |
| A | The elements have formed a compound and so are not joined to each other |
| B | The elements have formed a mixture and so are joined to each other |
| C | The elements have formed a mixture and so are not joined to each other |
| D | The elements have formed a compound and are joined to each other |
| Question 3. | |
Look at the two different particles on. |
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| a) | In your jotter, draw what you think a compound between these two particle would look like. |
| b) | The particles make a compound called magnesium oxide. What two elements would be used in making this compound? |
| c) | From what are compounds made? |
| Question 4. | |
| Because zinc can combine with other substances but cannot be changed into a simpler substance by an ordinary chemical process, zinc is classified as — | |
| A | a compound |
| B | an acid |
| C | an element |
| D | a mixture |
| Question 5. | |
| The structure of substances can be shown as models. Which of the models below show an element? | |
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| Question 6. | |
| In a table, divide the list of substances below into 2 groups under the headings: elements and compounds. |
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