Chemistry Basics

How do atoms differ from compounds?

• Compounds have more than one atom.

• Compounds only have 1 atom

• Compounds and atoms are the same

• Atoms are made up of compounds.

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

• 19
• 39
• 20
• Impossible to tell

How many electrons would an atom of Krypton have?

• 83.80
• 36
• 12
• none

If a Carbon atom has 6 protons, how many electrons will it have?

• 2
• 4
• 6
• 8

Tags

NGSS.MS-PS1-1

Which statement is TRUE about protons?

• The atomic number is the same as the number of protons
• They swarm around in orbitals around the nucleus
• They have no charge
• They are negatively charged

How many atoms make up a molecule of water?

• 1
• 2
• 3
• 4

What are the parts of an atom?

• Proton

• Electron

• Neutron

• All of the above

Tags

NGSS.MS-PS1-1

How would you classify the highlighted (yellow) section of the periodic table?

• Metals

• Nonmetals

• Noble Gases

• Elementals

Tags

NGSS.MS-PS1-1

Water and carbon dioxide are examples of which of the following?

• Elements

• Compounds

• Metals

• Noble Gases

Tags

NGSS.MS-PS1-1

H is a chemical name for _______

• Helium

• hydrogen

• potassium