Unit 2 Vocabulary

What is the charge of a proton?

• Positive

• Negative

• Neutral

• No charge

What is the charge of an electron?

• Positive

• Negative

• Neutral

• No charge

Tags

NGSS.MS-PS2-3

What is a neutron?

• A positively charged particle

• A negatively charged particle

• A particle with no charge

• A particle with both positive and negative charges

What does the atomic number represent?

• The number of protons in an atom

• The number of neutrons in an atom

• The total number of particles in an atom

What is an element?

• A pure substance made of only one kind of atom

• A mixture of different atoms

• A compound made of multiple elements

• A substance with no atoms

What are isotopes?

• Atoms with the same number of protons but different numbers of neutrons

• Atoms with the same number of protons and neutrons

• Atoms with the same number of electrons but different numbers of protons

• Atoms with the same number of electrons and neutrons

Tags

NGSS.HS-PS1-8

What do periods in the periodic table represent?

• (horizontal rows) have elements with the same number of energy levels.

• Elements with the same number of protons

• Elements with the same number of neutrons

• Elements with the same number of electrons

What do groups in the periodic table represent?

• (vertical columns) have elements with similar chemical properties.

• Elements with the same number of energy levels

• Elements with the same number of protons

• Elements with the same number of neutrons

What is an atom?

• The smallest particle of an element

• The smallest particle of a compound

• The smallest particle of a mixture

• The smallest particle of a substance

Tags

NGSS.MS-PS1-1

the atomic model is The smallest unit of an element, consisting of protons and neutrons in a nucleus orbited by a number of electrons

• true

• false

Tags

NGSS.MS-PS1-1