Chemistry Review

What is the smallest part of an element?

• Nucleus

• Proton

• Atomic Mass

• Atom

What is the center of an atom called?

• Proton

• Plasma

• Core

• Nucleus

Which particle in an atom has no charge?

• Proton

• Neutron

• Electron

• Nucleus

The __________________ tells how many protons there are in an atom.

• Group

• Period

• Mass

• Atomic Number

How many periods are there on the modern Periodic Table?

• 7

• 10

• 8

• 18

Which of the following substances is a compound?

• Copper (Cu)

• Oxygen (O)

• Magnesium (Mg)

• Salt (NaCl)

Tags

NGSS.MS-PS1-1

What kind of substance is composed of two or more elements that are chemically combined?

• Element

• Mixture

• Particle

• Compound

A combination of substances that are not chemically combined is called a(n):

• Physical

• Mixture

• Element

• Compound

A mixture in which the parts can be easily separated is called:

• Elements

• Heterogeneous

• Compounds

• Homogeneous

A student pours two elements together and they react to form matter with entirely different properties than the elements they started with. The student has made a(n):

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5