Casspp Science

The positively charged subatomic particles contained in the nucleus of an atom are called _____________.

• protons

• neutrons

• electrons

• matter

Tags

NGSS.MS-PS1-5

A negatively charged subatomic particle that orbits the nucleus of an atom is called a(n) _______________.

• proton

• neutron

• electron

• matter

What's a valence electron?

• electrons in the second energy level

• electrons in the outermost energy level

• the atomic number

• electrons in the first level

What happens when two oppositely charged ions are pushed together?

• they will repel (move apart)

• they will be attracted to each other (move together)

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following accurately describes the chemical formula of the molecule shown above?

• 3CH₈O

• C₃H₇O

• C₄H₈O₂

• C₃H₈O

Tags

NGSS.MS-PS1-1

The red numbers in the image below represent ________

• subscripts

• coefficients

• I don't know, and don't want to try

• None of the answers are correct

The blue numbers in the image are called ________. These represent how may of that atom there are.

• I don't know, and don't want to try

• coefficients

• subscripts

• none of the answers are correct

The substances at the beginning of a chemical equation (to the left of the arrow) are called the ____

• product

• yield

• chemical symbol

• reactants

In this image, the symbols to the right of the arrow (in black) are called the_______

• Products

• Reactants

• Subscripts

• Coefficients

Tags

NGSS.MS-PS1-2

What does the ARROW mean in a chemical reaction?

• go

• equals

• yields

• stop

Tags

NGSS.MS-PS1-2