Chemical Reactions and Energy Changes

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

A reaction that release energy in the form of heat is

• endothermic

• synthesis

• exothermic

• decomposition

Tags

NGSS.MS-PS1-4

A cold pack becomes cold because the reaction inside of it is

• endothermic

• exothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

During a chemical reaction, mass is

• created

• destroyed

• conserved

Tags

NGSS.MS-PS1-5

the starting materials in a chemical reaction

• Products

• Reactants

• Starters

• Energizers

The new substances that are made after a chemical equation are the

• Products

• Reactants

• Starters

• Enders

Tags

NGSS.MS-PS1-5

True or False

In a chemical reaction, no new types of atoms are created, and no atoms are destroyed.

• true

• false

Tags

NGSS.MS-PS1-5

NaCl in this chemical reaction is called the

• product

• reactant

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a chemical reaction, ________________________ are changed into _______________________.

• Reactants; Products

• Electrons; Molecules/Compounds

• Coefficients; Subscripts

• Original Elements; New Elements

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is an example of substances reacting chemically?

• iron and oxygen forming rust

• paper being cut into small pieces

• chocolate melting in a pan

• flour and sugar mixed together in a bowl

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5