Atoms are the basic building blocks of the universe. Made up of protons, neutrons and electrons.

Anything that has mass and takes up space. All matter is made up of atoms.

Atoms are made of 3 smaller parts: protons, neutrons, electrons

Protons are the subatomic particles that have a positive charge.They are found in the nucleus.

Neutrons are the subatomic particles that have no charge(neutral charge). They are found in the nucleus

Electrons are the subatomic particles that have a negative charge. They are extremely small and circle around the nucleus in different energy levels. Determines whether the atom will react.

The center of the atom containing the Protons and Neutrons is called the Nucleus

Electron Shell/Energy Level

The electrons circle around the nucleus in different pathways called “shells" or "energy levels".

Tells you how many protons the atom has. Atoms must have equal number of protons and electrons.

Tells you the average mass of the nucleus of the atom which contains both Protons and Neutrons, NOT electrons.

Tells you the maximum number of electrons in each energy level is the 2n2 Rule where n = the number of the energy level.

Two or more atoms share or transfer electrons to become stable. When electrons do this the atoms are said to be bonded together

Atoms are stable if they have 8 electrons in their outermost energy level

The atoms in the molecule are all different (example, C02) .

Atoms of the same element that are bonded together form molecules .

Making and/or breaking bonds. When these bonds break, energy is released. Living organisms get their energy from bonds breaking in chemical reactions.

Protein molecules that speed up chemical reactions. Also known as Catalysts.

The enzyme and substrate must fit together to work. Key (substrate) and Lock (enzyme)

Shows the atoms or molecules that you begin with and will react

The atoms that undergo a chemical reaction. These are to the left of the arrow in a chemical equation

Shows what is made in the chemical reaction. These are to the right of the arrow in a chemical equation.

The arrow in a chemical equation that separates the reactants from the products.

Atoms with a positive or negative charge

compounds that form H+ (hydrogen ions) in a solution. Below 7 on pH scale

compounds that work OH- (hydroxide ions) in solution. Above 7 on pH scale

A scale that goes from 0-14 that measures the strength of acids and bases

A substance that shows the presence or concentration of a certain substance

The study of matter and how it changes.

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Chemistry Unit

Chemistry Unit - Basic

Question	Answer
Atom	Atoms are the basic building blocks of the universe. Made up of protons, neutrons and electrons.
Matter	Anything that has mass and takes up space. All matter is made up of atoms.
Subatomic Particles	Atoms are made of 3 smaller parts: protons, neutrons, electrons
Proton	Protons are the subatomic particles that have a positive charge.They are found in the nucleus.
Neutron	Neutrons are the subatomic particles that have no charge(neutral charge). They are found in the nucleus
Electron	Electrons are the subatomic particles that have a negative charge. They are extremely small and circle around the nucleus in different energy levels. Determines whether the atom will react.
Nucleus	The center of the atom containing the Protons and Neutrons is called the Nucleus
Electron Shell/Energy Level	The electrons circle around the nucleus in different pathways called “shells" or "energy levels".
Atomic Number	Tells you how many protons the atom has. Atoms must have equal number of protons and electrons.
Atomic Mass	Tells you the average mass of the nucleus of the atom which contains both Protons and Neutrons, NOT electrons.
2n^2 Rule	Tells you the maximum number of electrons in each energy level is the 2n2 Rule where n = the number of the energy level.
Bonds	Two or more atoms share or transfer electrons to become stable. When electrons do this the atoms are said to be bonded together
Octet Rule	Atoms are stable if they have 8 electrons in their outermost energy level
Compound	The atoms in the molecule are all different (example, C02) .
Molecule	Atoms of the same element that are bonded together form molecules .
Chemical Reaction	Making and/or breaking bonds. When these bonds break, energy is released. Living organisms get their energy from bonds breaking in chemical reactions.
Enzymes	Protein molecules that speed up chemical reactions. Also known as Catalysts.
Lock and Key Model	The enzyme and substrate must fit together to work. Key (substrate) and Lock (enzyme)
Chemical Equation	Shows the atoms or molecules that you begin with and will react
Reactant	The atoms that undergo a chemical reaction. These are to the left of the arrow in a chemical equation
Product	Shows what is made in the chemical reaction. These are to the right of the arrow in a chemical equation.
Yields	The arrow in a chemical equation that separates the reactants from the products.
Ions	Atoms with a positive or negative charge
Acids	compounds that form H+ (hydrogen ions) in a solution. Below 7 on pH scale
Bases	compounds that work OH- (hydroxide ions) in solution. Above 7 on pH scale
pH Scale	A scale that goes from 0-14 that measures the strength of acids and bases
Indicator	A substance that shows the presence or concentration of a certain substance
Chemistry	The study of matter and how it changes.

Created by: bigelowbulldog

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