Chemistry Practice Test

What is the name for the outer ring electrons of an atom?

• Ionic electrons

• Negative electrons

• Valence electrons

• Covalent electrons

A large molecule built from many small pieces is called a _______________.

• Polymer

• Monomer

• Acid

• Base

Tags

NGSS.MS-LS1-7

Which of the following is a synthetic polymer?

• Snake venom

• Plant cellulose

• Plastic

• Cotton

Tags

NGSS.MS-PS1-3

How many total atoms does this compound have?

• 1 atom

• 2 atoms

• 3 atoms

• 4 atoms

Tags

NGSS.MS-PS1-1

How many electrons are being shared?

• 1 electron

• 2 electrons

• 3 electrons

• 4 electrons

• 5 electrons

What would the chemical formula be for this compound? Mark only one oval.

• CaCl2

• Ca2Cl

• ClCa

• ClCa2

Tags

NGSS.MS-PS1-1

Which elements are in this compound? Select all that apply. Check all that apply.

• Calcium

• Copper

• Carbon

• Chlorine

• Cobalt

Tags

NGSS.MS-PS1-1

What holds the atoms together in a compound?

• Protons

• The Nucleus

• Polymers

• Chemical Bonds

Tags

NGSS.MS-PS1-1

What is the atomic number of an atom that contains 18 neutrons and 17 protons?

• 1

• 17

• 18

• 35

What particle in the atom has the smallest mass?

• proton

• electron

• neutron

• nucleus