Water and Solutions

What percentage of the human body is water?

• about 20%

• about 40%

• about 60%

• about 80%

What is the chemical name for water?

• hydrogen oxide

• hydrogen monoxide

• dihydrogen dioxide

• dihydrogen monoxide

Tags

NGSS.MS-PS1-1

One of the reasons water is the key to life on Earth is because it's really good at ___

• dissolving stuff

• lubricating stuff

• freezing solid

• floating stuff

Tags

NGSS.HS-ESS2-5

To whiten whites, you might use a solution of sodium hypochlorite, better known as ___

• borax

• laundry detergent

• hydrogen peroxide

• bleach

What makes bleach so good at its job is that it's a really ___

• weak oxidizer

• strong oxidizer

• weak acid

• strong acid

Tags

NGSS.HS-PS1-2

What is the chemical formula of hydrogen peroxide?

• HO

• HO₂

• H₂O₂

• H₂O₄

The bottle of hydrogen peroxide contains a solution where water is the liquid, or ___

• solvent

• solute

• electrolyte

• nonpolar compound

The dissolved material in a solution is called the ___

• solvent

• solute

• electrolyte

• ionic compound

Oxygen is very good at pulling electrons toward it. It's said to have a high ___

• isoelectronic state

• ductility

• conductivity

• electronegativity

Tags

NGSS.HS-PS1-1

The electrons in a water molecule tend to spend most of their time ___

• near the hydrogens

• near the oxygen

• along the center line

• away from the center line

Tags

NGSS.HS-PS1-3