1. CHEMISTRY AND THE ENVIRONMENT FOUR CORNERS

2. HYDROCARBONS ARE SUBSTANCES HARMFUL TO THE ENVIRONMENT CAUSED BY: 1-Radiation. 2-Burning fossil fuels. 3-Heavy metals. 4-Spraying pesticides.

3. SYNTHETIC DETERGENTS CAUSE ENVIRONMENTAL DAMAGE BECAUSE THEY OFTEN CONTAIN: 1-Acidifiers. 2-Pesticides. 3-Phosphates. 4-Soap.

4. A COMMON MATERIAL CAUSED BY RADIOACTIVITY, POSING ENVIRONMENTAL PROBLEMS, IS: 1-Water. 2-Non-metal oxide. 3-Glucose. 4-Radon.

5. THE COMBINATION OF CHEMICAL SYMBOLS AND NUMBERS THAT DEPICT A COMPOUND IS A/AN: 1-Chemical formula. 2-Chemical reaction. 3-Chemical statement. 4-Chemical replacement.

6. WHY IS AG THE SYMBOL FOR SILVER? 1-Ag means Agrisilver 2-The old Spanish name was augmentin 3-Silver is used in agriculture 4-The old Latin name for silver

7. A HEAVY METAL IS AN ELEMENT: 1- with a high atomic weight or mass 2- with a low atomic weight or mass 3- with low toxicity 4- like flourine, bromine, and astatine

8. HOW MANY ELEMENTS ARE CONSIDERED NOBLE GASES?  1- five  2- ten  3- eight  4- six

9. ALL ELEMENTS CAN BE CLASSIFIED INTO TWO MAIN GROUPS: 1- ductile metals and free moving gases 2- metalloids and nonmetalloids 3- metals and nonmetals 4- periods and families

10. THE SMALLEST AMOUNT A SUBSTANCE CAN EXIST AT AND KEEP ITS PROPERTIES IS BEST DESCRIBED AS/AN: 1-Atom. 2-Compound. 3-Element. 4-Molecule.

11. THE CHEMICAL FORMULA FOR TABLE SALT IS: 1-CaOH. 2-NaCl. 3-NaOH. 4-Salt.