| 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 |
