1. Put the statements about the human life cycle into the correct order:
A: Puberty :B Birth C: Adolescence D: Childhood
E: Adult

2. The core of the Earth is made of nickel and which other element?

3. What happens to the current through a component if the voltage is increased?

4. A block of plastic has a volume of 6cm3 and a mass of 12g. What is the DENSITY of the plastic?

6. What kind of substance is air

7. 15g of copper foil is heated in a sealed test tube until the copper stops changing colour.
After the experiment had cooled the tube was opened and then re-weighed.

These were his results:

Mass of tube + copper before heating = 75gMass of tube after heating = 75.3gApproximately what mass of oxygen was in the tube?

 

8. Which of the following is NOT true about the Moon

9. What is one-half cubed?

10. Name the waste gas that we breath out
(produced during respiration)