Chemical Energy Test

What is an electron?

• + charged particle in an atom's nucleus

• - charged particle in an atom's nucleus

• - charged particle outside an atom's nucleus

• + charged particle outside an atom's nucleus

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is a valence electron?

• electron available for bonding

• electron in the outermost level of an atom

• electron in the innermost level of an atom

• total number of an atom's electrons

How can you determine an atom's valence electrons?

• the column on the periodic table

• the row on the periodic table

• the atomic number

• the atomic mass

How many valence electrons do most electrons want in their valence shell to be stable? (Except hydrogen!)

• 2

• 4

• 6

• 8

What kind of energy is stored in the chemical bonds between atoms?

• kinetic energy

• thermal energy

• chemical energy

• light energy

Tags

NGSS.HS-PS1-4

What kind of energy is released or absorbed when chemical bonds are formed and broken?

• kinetic energy

• thermal (heat) energy

• chemical energy

• light energy

Tags

NGSS.HS-PS1-4

All types of chemical bonds hold the same amount of chemical energy.

• True

• False

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

How many C-H bonds are present here?

• 4

• 5

• 6

• 7

Tags

NGSS.MS-PS1-1

How many carbon-oxygen double bonds are present here?

• 1

• 2

• 3

• 4

What energy is stored in fruit, vegetables, meat, and other foods?

• a. thermal energy

• b. sound energy

• c. electrical energy

• d. chemical energy

Tags

NGSS.MS-LS2-3