Module 2 Check Atoms

A substance that cannot be broken down into simpler substances is called a(n) ______.

• atom

• electron

• element

• nucleus

The smallest particle of matter having all the element’s characteristics is a(n) ______.

• atom

• proton

• neutron

• electron

The ______ is made up of protons and neutrons.

• electron

• nucleus

• element

• atom

Small particles that have mass and positive electrical charges are called ______.

• electrons

• neutrons

• protons

• atoms

Particles that have about the same mass as protons, but are electrically neutral, are called ______.

• electrons

• neutrons

• protons

• atoms

Surrounding the nucleus of an atom are tiny particles called ______.

• protons

• neutrons

• electrons

• elements

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

The positively charged particles of an atom are the ________.

• electrons
• protons
• neutrons
• protons & neutrons

The mass number of an atom is the mass of ______ + _____

• protons + neutrons

• protons + electrons

• neutrons + nucleus

• protons + nucleus

Tags

NGSS.MS-PS1-1

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• DNA and RN