11. Why is titanium dioxide commonly used in sunscreen? It dissolves easily in water It reflects and scatters UV rediation It changes color in sunlight It reacts with skin proteins

Oxyacetylene cutting is a very rapid form of rusting. True or False

10. Which types of bonds tend to have the highest bond energy? 11. Which types of bonds tend to have the lowest bond energy?

Part 1: In the space below, use the periodic table and show how to calculate the molar mass of water (H_(2)O) and oxygen gas (O_(2)) Molar mass of H2O: H_(2)O:underline ( )g/mol Part 2: Balance and classify the reaction for the creation of oxygen gas (O_(2)) from water (H_(2)O) Fill in the blanks to balance the chemical reaction below: What type of reaction is this? (circle the correct answer) a. Single Replacement b. Double Replacement c. Combustion d. Decomposition underline ( )H_(2)O(l)arrow underline ( )H_(2)(g)+underline ( )O_(2)(g) Molar mass O_(2):underline ( )g/mol

At room temperature and pressure, the distance between gas particles is about __ times the diameter of the particles themselves. a two b fifty c one hundred d ten

4 7 Add an answer item! Add an answer item! Answer Bank carbon iodine