EXERCISES Tick (/) the correct options.
1. A metal that is non-magnetic is
nickle.
cobalt.
iron.
ㅁ
gold.
2. If a substance does not react in dilute acid, it could be
sodium.
potassium. phosphorus. calcium.
3. The most abundant non-metal within the Earth's crust is
oxygen. Squartz.
phosphorus. . sulphur.
4. A non-metal that is highly lustrous is
carbon.
diamond. graphite. quartz.
5. When iron combines with oxygen, it forms
Drust.
hydrogen gas.
a non-me
a precipitate.
he drawn into a wire is a measure of its​

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Calculate the number of molecules present in 0.750 mol of mgo.

If two objects at different te,peraure are in contact with each other what happens to their temperature