Classification of Compounds Quiz

What are the basic structural parts of an atom that were learned in sixth grade?

• Neutrons, isotopes, and electrons

• Positively charged electrons, negatively charged protons, and isotopes

• Negatively charged electrons, positively charged protons, and neutrons

• Protons, neutrons, and electron clouds

Tags

NGSS.MS-PS1-1

What is the smallest particle of a compound called?

• An atom

• A molecule

• An element

• A mixture

Tags

NGSS.MS-PS1-1

What is a compound?

• A mixture of two or more elements that are physically combined

• A single element in its pure form

• A substance created when two or more atoms of the same element combine

• A substance created when two or more atoms of different elements chemically combine

Tags

NGSS.MS-PS1-1

Which of the following is an example of a compound?

• Oxygen gas (O2)

• Water (H2O)

• Nitrogen gas (N2)

• Hydrogen gas (H2)

Tags

NGSS.MS-PS1-1

What type of bond is formed when a metallic element reacts with a non-metallic element?

• Covalent bond

• Metallic bond

• Ionic bond

• Hydrogen bond

How are chemical symbols usually represented?

• By a single letter that is always lowercase

• By one, two, or three letters with the first letter capitalized

• By one, two, or three numbers with the first number capitalized

• By a full name of the element in lowercase

What is the chemical formula for sodium chloride?

• H2O

• CO2

• NaCl

• H2CO3

What does the subscript in a chemical formula represent?

• The number of molecules in a compound

• The number of compounds in a reaction

• The number of atoms of the element in the compound

• The charge of the compound

What is the chemical formula for carbon dioxide?

• NaCl

• H2O

• CO2

• H2CO3

Tags

NGSS.MS-PS1-1

What is produced when carbon dioxide (CO2) and water (H2O) combine in a chemical reaction?

• Sodium chloride (NaCl)

• Oxygen (O2)

• Carbonic acid (H2CO3)

• Hydrogen (H2)