Science Homework #21: Year 11
Homework | Topic: | |
Question 1 | Which part of the atmosphere protects us from ultra violet light from the Sun? | P2 |
Question 2 | Which useful chemical can the acidic gas, hydrogen chloride be converted to by oxidation? | C3 |
Question 3 | An injection containing a safe form of a disease causing micro-organism is known as a _____________? | B2 |
Question 4 | The electrolysis of brine (salt water) gives three useful chemicals...Name them. | C3 |
Question 5 | Which substance is used in the food industry AND to make chlorine AND to treat roads? | C3 |
Question 6 | As the distance from the source of EM radiation increases the intensity (stays the same/ increases/ decreases). Delete the wrong ones! | P2 |
Question 7 | Why might nanoparticles be used for tennis racquets? | C2 |
Question 8 | Sports clothing is less likely to smell after use when it contains nanoparticles. Why? | C2 |
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