Chemistry and the environment four corners

CHEMISTRY AND THE ENVIRONMENT FOUR CORNERS

HYDROCARBONS ARE SUBSTANCES HARMFUL TO THE ENVIRONMENT

CAUSED BY:

1-Radiation.

2-Burning fossil fuels.

3-Heavy metals.

4-Spraying pesticides.

SYNTHETIC DETERGENTS CAUSE ENVIRONMENTAL DAMAGE BECAUSE THEY

OFTEN CONTAIN:

1-Acidifiers.

2-Pesticides.

3-Phosphates.

4-Soap.

A COMMON MATERIAL CAUSED BY RADIOACTIVITY, POSING ENVIRONMENTAL

PROBLEMS, IS:

1-Water.

2-Non-metal oxide.

3-Glucose.

4-Radon.

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.

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

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

HOW MAN Y ELEMEN TS ARE CON SIDERED N OBLE GASES?

1- five

2- ten

3- eight

4- six

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

T H E S M A L L E S T A M O U N T A S U B S T A N C E C A N E X I S T A T A N D K E E P I T S P R O P E R T I E S I S B E S T

D E S C R I B E D A S / A N :

1-Atom.

2-Compound.

3-Element.

4-Molecule.

THE CHEMICAL FORMULA FOR TABLE SALT IS :

1-CaOH.

2-NaCl.

3-NaOH.

4-Salt.