Subatomic Particles & Using Periodic Table

What is the smallest unit of matter?

• Atom

• Element

• Ion

• Isotope

What 3 subatomic particles make up atoms?

• Isotopes, protons, covalent bonds

• electrons, ions, isotopes

• protons, neutrons, isotopes

• protons, neutrons, electrons

A chemical ________ is a pure substance made entirely of 1 type of atom.

• element
• compound
• mixture
• blend

Tags

NGSS.MS-PS1-1

The nucleus of an atom contains:

• protons and neutrons

• electrons

• electrons and protons

• isotopes

Tags

NGSS.HS-PS1-8

What is at the center of every atom?

• An electron

• A compound

• A molecule

• A nucleus

Tags

NGSS.MS-PS1-1

What charge is the proton?

• positive

• no charge (neutral)

• negative

What charge does a neutron have?

• positive
• negative
• no charge
• neutral

What is the role of an electron in an atom?

• Electrons are in the nucleus and carry a neutral charge.

• Electrons move around the nucleus and have a positive charge.

• Electrons move around the nucleus and have a negative charge.

• Electrons are in the nucleus and have a negative charge.

The number of protons is called

• Mass Number

• Atomic Number

Each element ___ its own atomic number.

• has
• does not have
• sometimes has (depends on the element)