Unit II - HS Basic Chem Quiz

Which of the following is not a chemical change in a human body?

• food digestion

• electrolyte balance

• blood glucose

• skin becoming wrinkled with age

Everything in the universe that takes up space and has mass is called ___________________.

• atoms

• matter

• ions

• weight

The basic unit of matter is the ______________.

• cell

• stage

• atom

• proton

A chemical element whose concentration is very low in living tissues, but are essential for life are called ___________________.

• reactants

• trace elements

• enzymes

• catalysts

Which of the following element is NOT found in the human body?

• calcium

• potassium

• magnesium

• argon

What four elements make up 96% of the human body weight?

• oxygen, carbon, hydrogen and nitrogen

• oxygen, hydrogen, argon and nitrogen

• oxygen, calcium, hydrogen and nitrogen

• None of the Above

In order for a solution to be an electrolyte, it must

• form ions when dissolved in water

• have a positive charge

• have a negative charge

• maintain fluid balance

What is a universal solvent?

• Liquids

• Fluids

• Whatever can dissolve acids

• A liquid that dissolves most substances

What substance is considered the universal solvent and is vital for human life?

• food

• water

• oxygen

• air

A chemical substance that speeds up the rate of a chemical reaction is known as a _.

• liquid

• enzyme

• catalysts

• chemical reaction