Week 2 - Chemistry

The amount of matter in an object is a measure of the object's ________________.

• volume
• density
• mass
• solubility

Tags

NGSS.HS-PS1-7

What is the volume of the rock? The water level is displaced from 20 mL to 23 mL with the rock.

• 3 mL
• 23 mL
• 20 mL
• 43 mL

What is the formula for calculating density?

• Mass ∗ Volume
• Volume ∗ Mass
• Mass ÷ Volume
• Volume ÷ Mass

What is the density of water?

• 1 mL
• 1 gram
• 1 g/cm³
• All of the above

What is at the center of every atom?

• An electron
• A compound
• A molecule
• A nucleus

Tags

NGSS.HS-PS1-8

In an atom, what is the number of protons equal to?

• The number of electrons.
• The number of neutrons.
• The number of molecules.
• The number of nuclei.

Tags

NGSS.MS-PS1-1

A proton has this charge

• negative
• positive
• neutral

A particle in the nucleus of a atom with no electrical charge

• neutron
• nucleus
• electron
• proton

Tags

NGSS.HS-PS1-8

What is an ion?

• A Charged Atom
• A Large Atom
• A Small Atom
• A Cute Atom

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible