Chemistry Quiz

You don’t understand how to properly set up your equipment during a lab. You should

• Try different things until something works

• Ask the instructor for help

• Proceed to the parts of the lab you do understand

• Copy another group

The correct way to move about the laboratory is to

• Skip

• Walk

• Run

• Hurry

The ________ is a chart created by chemists to organize the elements according to repeated changes on properties.

• isotope

• periodic table

• metalloid list

• mass number

Which statement is true about oxygen-17 and oxygen-18?

Elements in the 17th column of the periodic table are known as the halogens. These elements, when ionized, have what in common?

• A charge of 1-

• A charge of 1+

• A charge of 2-

• A charge of 2+

To become stable, sodium (Na) will ________ electrons and form a ________ ion.

• lose, positive

• gain, negative

• gain, positive

• lose, negative

The atomic mass of an element is ________ of that element.

________ are atoms of the same element that have different numbers of neutrons.

• Isotopes

• beta particles

• compounds

• alpha particles

Which of the following is the correct chemical symbol for carbon?

• Ca

• Crbn

• Car

• C

Which of the following best describes the three general classes (or categories) of elements?

• metals, metalloids, and nonmetals

• solid, liquid, and gas

• metals, nonmetals, and noble gases

• metals, metalloids, and synthetics