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Chemical Bonds
Atoms and Molecules
Properties of Water
Molecules of Life
Scientific Method
100
The smallest particle into which a substance can be divided and still retain all of its chemical properties.
What is an atom?
100

The nucleus of an atom is composed of these two subatomic particles.

What are protons & neutrons?

100
These bonds hold the individual water molecules together.
What are Hydrogen Bonds?
100
This atom makes up the core in all organic molecules.
What is Carbon?
100
The first step in all scientific processes. This step leads to the formulation of hypotheses.
What is Observation?
200
An atom that has gained or lost one or more electrons.
What is an Ion?
200

These types of electrons are available to form bonds.

What are valence electrons?

200

Water molecules are known as a polar molecule because of this property.

What is the uneven distribution of charge within the molecule?

200

Enzymes do this to a chemical reaction.

What is speed up the reaction? Or What is lower the activation energy?

200

This is an educated guess based on observations.

What is an hypothesis?

300
The force that bonds together water molecules.
What are Hydrogen Bonds?
300
This type of bonding involves the sharing of one or more pairs of electrons between atoms.
What are Covalent Bonds?
300
The attraction of water molecules to one another because of the hydrogen bonding.
What is Cohesion?
300

This is the energy required to start a chemical reaction.

What is activation energy?

300

A well tested hypothesis can become this (hint: There are two answers)

What is a scientific law or theory?

400
The electrons in the outer shell of an atom that allow for bonding.
What are Valence Electrons?
400
An atom that has lost one or more neutrons?
What is an Isotope?
400
These kinds of molecules are attracted to water.
What are hydrophyllic molecules?
400
These are the building blocks of all proteins (there are 20 of them).
What are Amino Acids?
400

The fourth step in scientific method. This is how the hypotheses are proven true or false.

What is Experimentation?

500
These bonds hold together items that form crystals, such as table salt.
What is an Ionic Bond?
500
A group of atoms linked together by chemical bonds, ionic bonds, covalend bonds, and/or hydrogen bonds.
What are molecules?
500
These types of molecules are repulsed by water.
What are hydrophobic molecules?
500

There are four elements that make up the majority of living matter. Name Three.

What are carbon, oxygen, nitrogen, and hydrogen?

500
A portion of an experiment where no variables are altered.
What are Controls?