WorksheetsUnit II - HS Basic Chem Quiz
Total questions: 15
Worksheet time: 23mins
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
A _ breaks down food into nutrients in the human digestive system.
water
bile
chemical
enzymes
True or False: Black coffee is considered an acid because its pH is 5.2.
(a)
The acid bases pH scale midpoint value is _.
5
6
7
8
What type of energy is a persons body using during the act of running?
mechanical energy
chemical energy
electrical energy
thermal energy
The digestive system uses metabolism to break down food. What type of energy id the body using in this process?
radiant energy
thermal energy
chemical energy
electrical energy
