Atoms, Elements, and Compounds
Chemical Reactions
Water and Solutions
Macromolecules
Miscellaneous
100
This is part of the atom with a positive charge.
What is a proton?
100
Boiling water is an example of this type of change.
What is a physical change?
100
This is the name for molecules that have an unequal distribution of charges, such as water.
What are polar molecules?
100
These are the four types of macromolecules.
What are carbohydrates, lipids, proteins, and nucleic acids?
100
A neutral element with 20 protons will have this number of electrons.
What is 20?
200
These are numbers of protons, neutrons, and electrons in beryllium.
What are 4 protons, 4 electrons, and 5 neutrons?
200
The principle of conservation of _________ states that matter cannot be created or destroyed.
What is mass?
200
This is another name for a homogeneous mixture.
What is a solution?
200
This type of macromolecule makes up the fats, oils, and waxes.
What are lipids?
200
Organic molecules all include this element.
What is carbon?
300
This type of bond is formed when electrons are shared between atoms.
What is a covalent bond?
300
Energy is released in this type of reaction.
What is an exothermic reaction?
300
This is a substance in which another substance is dissolved.
What is a solvent?
300
A major function of this type of macromolecule is energy storage.
What are carbohydrates?
300
This is the minimum amount of energy needed for reactants to form products in a chemical reaction.
What is activation energy?
400
This is the attraction between molecules.
What are van der Waals forces?
400
An enzyme serves as a biological catalyst that does this to chemical reactions.
What is speed up the rate or decrease activation energy?
400
These are substances that release a hydrogen ion (H+) when dissolved.
What are acids?
400
This type of macromolecule includes nitrogen and amino acids.
What are proteins?
400
A molecule is a compound in which the atoms are held together by this type of bond.
What is a covalent bond?
500
These are atoms of the same element that have different numbers of neutrons.
What are isotopes?
500
A substrate fits into this area of an enzyme.
What is the active site?
500
Milk is an example of this type of heterogeneous mixture.
What is a colloid?
500
Your muscles, skin, and hair are all made of this macromolecule.
What are proteins?
500
The measure of concentration of H+ in a solution is called this.
What is pH?
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