Chemistry Final Assessment

If I feed Puff Puff McGuff mole crabs, then his teeth will wear down. The dependent variable in this hypothesis is:

• Mole crabs as food

• Wearing down puffs teeth

• crabs and food

• crab and teeth

Tags

NGSS.MS-LS1-3

A horizontal row of elements in the periodic table

• Molecule

• Period

• Family

• Atom

Tags

NGSS.HS-PS1-1

The easy way to pick out an experiments responding (DV) variable is to look for:

• What was purposefully changed

• Number of trials

• What's being measured

• The test group

What is the atomic number of Chlorine?

• 3s²

• 35

• 36

• 17

Tags

NGSS.MS-PS1-1

What is one way Neutrons are different from electrons?

• they both are negative

• neutrons have no charge, while electrons have a negative charge

• Both are in the nucleus( center of atom)

• Electrons are inside nucleus and neutrons are outside the nucleus.

Tags

NGSS.HS-PS1-8

The atomic number represents the number of protons of an element.The number of protons is equal to the number of electrons.

How many protons and electrons does this element have?

• 3

• 17

• 35

• 36

Tags

NGSS.HS-PS1-1

If I add sliced garlic to my aquarium water, then my fish will eat a lot. The Independent Variable in this hypothesis is:

• Adding garlic to the aquarium

• The fish eating a lot

• Garlic and Fish

• type of aquarium

Atomic mass is equal to the number of protons + the number of neutrons.

How many neutrons does calcium have?

• 40

• 41

• 20

• 4s

Tags

NGSS.MS-PS1-1

Which of the following will have a larger radius than Zinc?

• Gallium

• Aluminum

• Magnesium

• Strontium

Tags

NGSS.HS-PS1-1

In the electron configuration for scandium (atomic number 21), what is the notation for the three highest-energy electrons?

• 4s2, 3d1

• 3d3

• 4s3

• 4s2 4p1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2