1) What is the symbol for oxygen?
2) What is the atomic number of carbon?
3) What is the name of the process by which a gas is cooled and turned into a liquid?
4) What property of a substance is determined by the number and arrangement of its atoms?
5) What unit is used to measure the amount of energy released or absorbed during a chemical reaction?
6) What is the state of matter for a substance with no definite shape or volume?
7) What type of reaction results in two or more substances combining to form a single substance?
8) What is the most common form of energy in chemical reactions?
9) What type of reaction produces heat and light energy?
10) What is the symbol for the element Iron?