CHM-1020 Exam 1

Green chemistry uses materials and methods that are designed to prevent or reduce pollution.

• True

• False

An example of a chemical change is browning of meat.

• True

• False

Chemistry is the study of matter and the changes it undergoes.

• True

• False

Which of these is a chemical change?

• The hair stylist cuts your hair.

• Silkworms convert mulberry leaves into silk.

• Wool is spun into yarn.

• Bleaching powder dissolves in water.

A molecule

• consists of one proton.

• consists of a mixture of two ions.

• is the smallest characteristic part of a compound.

• is a charged atom.

What is the chemical symbol for sodium?

• Sm

• S

• Na

• K

What is the chemical symbol for potassium?

• Pu

• P

• K

• Po

Which of the following CANNOT be the chemical symbol for an element?

• H₂

• Ca

• B

• Se

What is the name of the element with the symbol Ag?

• antimony

• silver

• mercury

• gold

What is the name of the element with the symbol Au?

• silver

• nickel

• gold

• plutonium