Physical Science Sol

Which of the following pairs of elements belong to the same period?

• Na and Cl

• Na and Li

• Na and Cu

• Na and Ne

How many atoms of Hydrogen are in H₂O

• 1

• 2

• 3

• more than 3

Tags

NGSS.MS-PS1-1

Calculate the number of Oxygen atoms in Al(OH)₃

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

The ______ are numbers found on the lower right-hand side of an element symbol.

• Coefficient

• Exponent

• Multiplier

• Subscript

Coefficients in chemical formulas...

• Multiply just the first atom

• Add to the subscripts at the end of the molecule

• Multiply elements without subscripts

• Multiply EVERYTHING!

How many different elements are present in this molecule?

• 15

• 36

• 5

• 4

Tags

NGSS.MS-PS1-1

A ______ is a number written in front of a chemical formula.

• Coefficient

• Subscript

• Exponent

• Coordinator

Identify the reactants in the following equation.

3HFe2O →H+2FEH+O

• H+2FEH+O

• 3HFe2O

Tags

NGSS.MS-PS1-1

Identify if the following equation is unbalanced or balanced.

4K+P₃→3KP+K

• Unbalanced

• Balanced

Tags

NGSS.MS-PS1-5

Identify if the following equation is unbalanced or balanced.

• Unbalanced

• Balanced

Tags

NGSS.HS-PS1-7