Atoms & the Periodic Table, Part 1

What is the chemical symbol for gold?

• 79

• 196.97

• Au

• 197

What does the atomic number tell you?

Choose the most correct answer.

• the number of electrons in an atom

• the number of protons in an atom

• the number of neutrons in an atom

• the number of particles in the nucleus of an atom

Use the picture at the right to determine the atomic number for fluorine.

• 18.999

• 19

• F

• 9

Tags

NGSS.MS-PS1-1

Use the picture at the right to determine the atomic number for phosphorus.

• 30.97

• P

• 15

• 31

Tags

NGSS.MS-PS1-1

Use your periodic table to determine what element has 50 protons?

• vanadium

  V

• tin

  Sn

• fermium

  Fe

Use a periodic table to determine how many protons are in argon (Ar).

• 39.95

• 40

• 18

• Ar

The number of protons in an atom is the same as the number of what other subatomic particle?

• electrons

• neutrons

• nucleus

• particles in nucleus

Use your periodic table to determine what element has 35 electrons.

• chlorine

  Cl

• bromine

  Br

• krypton

  Kr

Use the Bohr Model pictured and your periodic table to identify the element.

• phosphorus

  P

• sulfur

  S

• gallium

  Ga

• palladium

  Pd

Tags

NGSS.MS-PS1-1

Use the Bohr Model pictured and your periodic table to identify the element.

• beryllium

  B

• nitrogen

  N

• neon

  Ne

• lithium

  Li

Tags

NGSS.MS-PS1-1