1. Explain why elements in a group have similar properties
What is they have the same number of valence electrons?
100
5. Which group of elements is the least reactive?
What is 8A Noble Gases (Inert Gases)?
100
9. What is the main use of sulfur?
What is making sulfuric acid?
200
2. What is the relationship between an alkali metal's location in Group 1A and its reactivity?
What is becomes more reactive as it goes from top to bottom?
200
6. Why is hydrogen located in a group with reactive metals?
It has the same number of valence electrons
200
10. Why is chlorine added to drinking water?
What is to kill bacteria?
300
3. What element exists in almost every compound in your body?
What is carbon?
300
7. What biological function requires magnesium?
What is photosynthesis?
300
11. In which class of elements is there a greater range of properties: the metals or the non-metals?
What is non-metals, which are found as Gases (oxygen) and solids (Carbon), as well as varying colors (metals tend to be gray/silver)
400
4. Which Group 5A elements are found in fertilizer?
What is Nitrogen and Phosphorus?
400
8. Why is aluminium recycled?
What is is is less reactive than other elements, so it can be separated, and it is useful as a good conductor.
400
12. What happens to the reactivity of non-metals within a group from the top of the group to the bottom?
Nonmetal become less reactive going from the top to the bottom of the group
500
NOT HOMEWORK: What element is deadly poisonous if breathed as a gas, but absolutely necessary for our lives as a compound with sodium?
What is Chlorine?
500
NOT HOMEWORK: What element is one of only two that are liquids at room temperature, named for a Roman god, used to used to make hats, and will make you crazy?
What is Mercury?
500
NOT HOMEWORK: What is the chemical symbol for Sodium?