Atoms & Periodic Table

Which number represents the atomic number of this element?

• 12.011
• 6
• 3
• 12

Tags

NGSS.MS-PS1-1

Which number represents the atomic mass of this element?

• 12.011
• 6
• 3
• C

Tags

NGSS.MS-PS1-1

The "C" on this element square is called the...

• atomic number

• atomic mass

• element name

• symbol

Tags

NGSS.MS-PS1-1

Who had the theory that electrons can travel around the nucleus in definite paths and fixed distances.

• Niels Bohr
• Erwin Shrodinger
• Albert Einstein
• Charles Darwin

Who had the theory that the exact path of electrons cannot be predicted and that the region known as the electron cloud is an area where electrons can likely be found?

• Niels Bohr
• Erwin Shrodinger
• Albert Einstein
• Charles Darwin

The atomic number is also equal to the number of .....

• protons & neutrons
• neutrons & electrons
• protons & electrons
• all of the subatomic particles

Tags

NGSS.MS-PS1-1

To find the number of neutrons in an atom you have to ....

• Add the protons and electrons
• Subtract the atomic number from the atomic mass
• Subtract the electrons from the protons
• Add the atomic number to the atomic mass

Tags

NGSS.MS-PS1-1

Which subatomic particles are located in the electron cloud?

• protons

• neutrons

• electrons

• nucleus

Tags

NGSS.MS-PS1-1

Which subatomic particles are located in the nucleus of an atom?

• electrons and neutrons

• protons and electrons

• electrons and protons

• protons and neutrons

Tags

NGSS.MS-PS1-1

What is the smallest unit of all matter?

• atom
• cell

Tags

NGSS.MS-PS1-1