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Anatomy/Physiolology

Chemical Basis of Life

QuestionAnswer
What is the difference between mass and weight? Mass is the amount of matter in an object, while weight is the gravitational force acting on an object with a given mass.
Mass x Acceleration = Force
what are the four elements that make up 96% of a human's mass? Nitrogen, Carbon, Oxygen, Hydrogen
An oxygen atom can be cut in half and you would still have oxygen. (true or false) False
Oxygen atoms are very often found in pairs. (true or false) True
Protons have a charge that is... Positive
Neutrons have a charge that is... Neutral
Electrons have a charge that is... Negative
Protons have a mass of... One unit
Electrons have a mass of... Almost zero
Neutrons have a mass of... One unit
Atoms are electrically charged, but ions are electrically neutral. (true or false) False
Chemically, what defines the atom? The number of protons
How is atomic mass determined? The number of protons and neutrons
How is atomic number determined? The number of protons
When one atom gives up an electron to another atom this represents what kind of bond? Ionic
Atoms that give up electrons are what kind of agents? Reducing
Atoms that acquire electrons are what kind of agents? Oxidizing
When two atoms share an electron this is what kind of bond? Covalent
A substance that is composed of two or more different types of atoms that are chemically combined is called... A compound
When ions dissociate in water, they are called... Electrolytes
The capacity to do work is referred to as... Energy
Created by: Blake_Coffelt