Chemical Reactions and Equations

The things that exist BEFORE the reaction are called

• Reactants

• Products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this reaction balanced or unbalanced?

• balanced

• unbalanced

Tags

NGSS.MS-PS1-5

What kind of reaction is this: HCl + KI → HI + KCl

• single displacement

• double displacement

• synthesis

• decomposition

What kind of reaction is this: 3CuCl2 + 2Al → 2AlCl3 + 3Cu

• single displacement

• double displacement

• synthesis

• decomposition

In a chemical equation, the arrow points towards the ​ (a)   of the reaction.

• products

• reactants

• elements

• compounds

The starting materials in a chemical equation are the ​ (a)   The ending substances are the ​ (b)   ​

• reactants

• products

• yields

• ingredients

Tags

NGSS.MS-PS1-5

​ (a)   denote the number of atoms of an element in a molecule, and ​ (b)   denote the number of a molecule in an equation

• Subscripts

• Coefficients

• Superscripts

• Exponents

• Parentheses

• Cofactors

Iron + Copper Oxide -----> Iron Oxide + Copper

is an example of a​ (a)   reaction

• displacement

• electrolysis

• combustion

• hydrolysis

• bioleaching

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a chemical equation "aq" means ​ (a)   . This word means "dissolved in water". The compound or element has been put into water to form a solution ​or homogenous mixture. "l" means ​ (b)   . this means the compound or element is in the liquid phase. It has not been mixed with anything else. The arrow in a chemical equation means ​ (c)   . On the left side of the arrow are the ​ (d)   , and on the right side of the arrow are the ​​ (e)   .

• Aqueous

• liquid

• yields

• reactants

• products

Match to show which chemicals are the reactants and which are the products in this chemical equation

• Reactant

• Na

• Product

• H₂O

• Product

• H₂

• Reactant

• NaOH

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5