Chemistry Quiz

Which of the following elements is a noble gas?

• Nitrogen

• Oxygen

• Argon

• Chlorine

What is the atomic number of Carbon?

• 6

• 12

• 8

• 14

What is the name of the compound with the formula H2O?

• Hydrogen Peroxide

• Water

• Hydrochloric Acid

• Oxygen

Which of the following is an example of a chemical change?

• Melting ice

• Dissolving sugar in water

• Burning wood

• Shaping clay

Atoms of the same element can have different numbers of protons.

• True

• False

The periodic table is arranged by increasing atomic number.

• True

• False

Electrons are located in the nucleus of an atom.

• True

• False

A compound consists of two or more elements chemically bonded together.

• True

• False

An element is a pure substance made of only one kind of atom, while a compound is made of two or more different elements chemically combined. Which statement best explains the difference between an element and a compound?

• An element is made of only one kind of atom, while a compound is made of two or more different elements chemically combined.

• An element is made of two or more different elements, while a compound is made of only one kind of atom.

• Both elements and compounds are made of only one kind of atom.

• Elements and compounds are both made of two or more different elements.

The role of neutrons in an atom is to:

• stabilize the nucleus

• determine the chemical properties

• give the atom its charge

• control the number of electrons