Free Exam: Session3_25HKISOHR_Chemistry_Primary4
Number of Questions in Test: 25
Number of Questions in Preview: 5
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[size=4]Which action involves a chemical property of a substance, rather than a physical property?[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 2
[size=4]A scientist mixes two clear, colorless liquids. The mixture suddenly becomes cloudy and white particles sink to the bottom. This is evidence of a:[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 3
[size=4]Why is digesting food in your stomach considered a chemical change, while chewing it is only a physical change?[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 4
[size=4]The combustion of petroleum (like oil in a car engine) primarily requires the petroleum fuel and which other substance?[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 5
[size=4]What are the main products created when complete combustion of petroleum fuel occurs in a perfect system?[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |