Periodic Table Table, Atoms and Elements

How many atoms of oxygen are in a molecule of glucose, C₆H₁₂O₆?

• 3

• 12

• 10

• 6

Tags

NGSS.MS-PS1-1

How many atoms are in one formula unit of the compound FeC₅O₅?

• 1

• 5

• 10

• 11

Tags

NGSS.MS-PS1-1

How many atoms of carbon are included in one formula unit of the compound Na₂C₂O₄?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

In the reaction shown, iron reacts with water to form iron oxide (Fe₃O₄) and hydrogen gas (H₂).

Which of these BEST describes the iron (Fe) reactant?

• element

• molecule

• compound

• ion

The compound potassium sulfate, K₂SO_4, is composed of

• 2 atoms of potassium, 1 atom of sulfur, and 4 atoms of oxygen.

• 2 atoms of potassium, 4 atoms of sulfur, and 4 atoms of oxygen.

• two molecules of potassium and one molecule of sulfate.

• one molecule of potassium and two molecules of sulfate.

Tags

NGSS.MS-PS1-1

Where are the most reactive metals located on the periodic table?

• the uppermost complete row of the table

• the rows at the bottom of the table connecting two section

• the column at the far left side of the table

• the second column from the right side of the table

Which of these gaseous elements is LEAST reactive?

• hydrogen

• helium

• nitrogen

• oxygen

Elements in the same column of the periodic table of the elements all

• have the same number of protons.

• share the same atomic structure.

• have similar physical characteristics.

• share the same number of neutrons.

Sodium, Na, is in the same group as

• Ne

• Mg

• Ca

• K

According to the periodic table, argon is found in what column?

• 1 (1A)

• 2 (2A)

• 16 (6A)

• 18 (8A)