Periodic table - atom Practice

What does the number 39 represent on this periodic table square?

• atomic number

• atomic mass

• element symbol

• element name

Radium is in period number______.

• Period 2

• Period 3

• Period 4

• Period 7

• Period 6

Tags

112.27.b.6.B

What is the atomic mass of Oxygen?

• 8

• 15.999

• 2

• 6

Tags

NGSS.MS-PS1-1

Match the correct information

• Atomic number

• Magnesium

• Number of neutrons

• 24.305

• Atomic mass

• 12

• Name

• 12. 12.305 or 12

• Symbol

• Mg

Tags

NGSS.MS-PS1-1

Match the following Elements Name with its correct symbol

• Na

• Mercury

• S

• Sulfur

• Fe

• Sodium

• Hg

• Iron

• F

• Fluorine

Match the following Elements Name with its correct symbol

• Ag

• Gold

• Sn

• Tin

• Sb

• Antimony

• Au

• Lead

• Pb

• Silver

How many neutrons have an Iodine atom have?

Tags

NGSS.MS-PS1-1

If I had a mystery atom, and I knew it had 11 protons and atomic mass of 20, how many electrons does it have?

• 11

• 20

• 9

• 31

Tags

NGSS.MS-PS1-1

What atom is shown?

• Yttrium

• Gallium

• Ytterbium

Tags

NGSS.MS-PS1-1

Identify the solid liquids and gas in the periodic table

Groups:

(a) Solid

,

(b) Liquid

,

(c) Gas

• Oxygen

• Bromine

• Niobium

• Chlorine

• Cobalt

• Fluorine

• Germanium

• Mercury
• Argon

• Carbon

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4