Chemical Reactions Unit

The smallest particle of an element; made of electrons, protons, and neutrons

• Atoms

• Elements

• Molecules

• Products

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

The process by which one or more substances change to produce one or more different substances

• Chemical Process

• Reactant

• Chemical Reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The simplest unit of a chemical compound that can exist; formed when two or more atoms join together chemically

• Atom

• Compound

• Molecule

Tags

NGSS.MS-PS1-1

A substance produced during a chemical reaction

• Product

• Reactant

• Properties

Tags

NGSS.MS-PS1-2

Physical and chemical characteristics of matter used to describe or identify a substance

• Chemical Reaction

• Properties

• Product

Tags

NGSS.MS-PS1-2

A substance that takes part in and undergoes change during a reaction

• Product

• Molecule

• Reactant

A chemical reaction or process that absorbs heat from the surroundings

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4

A chemical reaction or process that releases heat.

• Endothermic

• Exothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The Law of Conservation of Mass states

• that matter exists in all states and reacts the same
• that matter can only be changed into new substances by introducing a catalyst
• that matter exists in the same state throughout any chemical change
• that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants

Tags

NGSS.MS-PS1-5

How many Al atoms are in this compound?         4Al₂O₃

• 2
• 8
• 6
• 4

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5