Chemistry Basics

Atoms are the basic unit of matter and the defining structure of elements.

• True

• False

Anything that takes up space and has mass is known as _______________.

• Matter
• Molecules
• Compounds
• Stuff

What are the positively charged particles in an atom?

• Protons
• Neutrons
• Electrons

Tags

NGSS.MS-PS1-1

Electrons have what charge?

• Negative
• Positive
• Neutral
   (No Charge)

Tags

NGSS.MS-PS2-3

Neutrons have what charge?

• Negative
• Positive
• Neutral
   (No Charge)

The nucleus of an atom is made up of...

• Protons and Neutrons
• Neutrons and Electrons
• Protons and Electrons

Tags

NGSS.MS-PS1-1

The image shows the periodic grid for POTASSIUM. What is Potassium's atomic number?

• 19
• 39
• 20
• Impossible to tell

Tags

NGSS.MS-PS1-1

The image shows the periodic grid for POTASSIUM. What is Potassium's atomic mass?

• 19
• 39
• 20
• Impossible to tell

Tags

NGSS.MS-PS1-1

A(n) ____________________ is a pure substance made of a single type of atom and cannot be broken down.

• Element
• Compound
• Molecule
• Mixture

What does the ATOMIC MASS tell us about an atom?

• Protons + Neutrons
• Protons + Electrons
• Neutrons + Electrons