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Biology Chemistry Test
Coleman-Jones-Tong
18
Biology
9th Grade
10/16/2012

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Cards

Term
Label the protons, neutrons, and electrons:[image]
Definition
[image]
Term
Protons have a _________ charge.
Definition
positive
Term
Neutrons have ________ charge.
Definition
No
Term

Electrons have a __________

charge.

Definition
Negative
Term
Electrons in the ourtermost energy level of an atom are called ____________ electrons.
Definition
Valence
Term
For an atom to become stable it can ______, ______, or ________ electrons.
Definition
gain, lose, or share
Term
This bond occurs when atoms share electrons:[image]
Definition
Covalent
Term
This bond occurs when atoms gain or lose electrons:[image]
Definition
Ionic
Term
Water is formed due to two atoms of ___________ bonding to one atom of _____________.
Definition
hydrogen, oxygen
Term
The hydrogen end of a water molecule is slightly __________.
Definition
positive
Term
The oxygen end of the water molecule is slightly __________.
Definition
Negative
Term
Water is polar and sticks to other polar molecules. This is known as a __________ bond.
Definition
hydrogen
Term
Property of water where water is sticking to water.
Definition
cohesion
Term
Property of water where water is sticking to another polar molecule (paper towel).
Definition
adhesion
Term
This occurs when both adhesion and cohesion are taking place.
Definition
Surface tension
Term
What are the 3 molecules most important to living organisms?
Definition

1. carbohydrates

2. proteins

3. lipids

Term
[image]
Definition
Carbohydrate
Term
[image]
Definition
Lipid
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