Chemistry Review

Which of these is a property of metals?

• Malleable

• Very brittle

• Can't conduct electricity

Which of the following is described as the basic unit of matter?

• Element

• Atom

• Molecule

• Compound

In the atom diagram shown, E is pointing to

• An electron

• a proton

• a neutron

• the nucleus

Tags

NGSS.MS-PS1-1

In this chemical equation, the elements in red are the_______.

• Products

• Reactants

• Subscripts

• Coefficients

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

What is the atomic mass of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What is a valence electron?

• an electron that is found in the outermost orbital of an atom. 

• an electron found in the innermost orbital of an atom.

• an electron found in the middle orbital.

Using the information provided, determine how many electrons the a Boron atom contains.

• 2.5

• 5

• 6

• 10.81

Tags

NGSS.MS-PS1-1

12g of Carbon react with 16g of Oxygen, how much carbon monoxide (CO) is formed? 

• 28 g

• 4g

• 30g

• 12g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many oxygen atoms are in this chemical formula?

• 6 oxygen atoms

• 2 oxygen atoms

• 3 oxygen atoms

• 4 oxygen atoms

Tags

NGSS.MS-PS1-1

In the atom diagram shown, A is pointing to the darker particles, these are known as

• electrons

• protons

• neutrons

• the nucleus

Tags

NGSS.MS-PS1-1