Chemistry+Practice+Questions

D10

1. What charge does an Al ion have if it has only 10 electrons? 2. Which group of elements in the periodic table is most stable and least reactive? What are these elements called? 3. Which element in this group would be the **least likely** to react with other elements? a. Boron b. Carbon c. Neon d. Oxygen 4. What element has 14 protons? 5. How many valence electrons does Sulfur have? 6. How many shells does Boron have? How do you know based on the periodic table?

D11

1. What is the name of the bond between a metal and a non-metal? 2. What kind of bond is formed in the creation of water?

D12

1. How can you tell if a substance is an acid or a base? 2. 2Na + 2H2O à 2NaOH + H2 is an example of what kind of reaction?

D13

1. What end of the ph scale would vinegar most likely be close to? Include the number and property.

D14

1. What are the byproducts of the combustion of a hydrocarbon? 2. What is a combustion reaction? 3. Complete the following combustion reaction C10H8 + 12 O2 ---> _

D15

1. What is a polymer? 2. What are some examples of synthetic polymers?

D16

D17

D18

1.What is a long-term effect of landfills on the enviornment?