Chemistry is Wonderful!

15 Points Per Correct Answer - No time limit  

1. What substance goes milky/cloudy when you bubble carbon dioxide into it? Hard water Lime water Distilled water Ethanol

2. Why is Hydrogen (the lightest element in the Periodic Table) not used in most balloons/airships? It is too expensive to use It is very poisonous It has an unpleasant smell It is flammable

3. What colour flame does Lithium have when it is lit? yellow sandy turquoise crimson

4. What element is graphite made up of? Answer: (One Word)

5. What is the correct name for the compound common salt, and what kind of compound is it? sodium salt and a covalent compound. sodium chloride and an ionic compound. sodium magnese and an ionic compond. sodium fluoride and a covalent compound.

6. If iron and hydrochloric acid reacted, what would you get? iron and hydrogen iron chloride and hydrogen nothing.They would stay the same hydro-iron

7. What chemical is made during 'The Haber Process'? Answer: (One Word)

8. When is an oxygen molecule formed? when two oxygen atoms bond together. when five oxygen atoms bond together. when three oygen atoms bond together. when four oxygen atoms bond together.

9. How many Hydrogen atoms are present in a methane molecule? Answer: (a number)

10. What colour flame is produced when magnesium burns in air? Also what is the compound you are left with? a brilliant green flame, and magnesium oxide a brilliant green flame and magnesium brillide a brilliant white flame, and magnesium hydride a brilliant white flame, and magnesium oxide