Chemical Reactions

Vocab

100

One or more substance (reactants) react to form two or more new substances (products).

Chemical reaction

200

Describing what you’re seeing in a chemical reaction using chemical formulas instead of words

Chemical equation

300

Used to represent when something is dissolved in water

aqueous (aq)

400

Small whole numbers that are placed in front the formulas in an equation in order to balance it.

Coefficients

500

What is an example of a sign of a chemical reaction

color change, temperature change, gas, bubbles, light, fire, etc...

Parts of an Equation

100

What does an arrow represent in a chemical reaction?

Yields, or reacts

200

2MgO is this in the equation 2Mg + O₂ -> 2MgO

Products

300

2Mg + O₂ is this in the equation 2Mg + O₂ -> 2MgO

Reactants

400

The general form a chemical reaction is written in 

Reactant to products

500

Is the total number of atoms in 3Na₂SO₄

21

Balancing Equations

100

__________ are used to make a skeleton equation, while __________ are used to balance an equation.

Subscripts and Coefficients

200

Are the correct coefficients when this equation is balanced K + Br₂ -> KBr

 2, 1, 2

300

Is the correct coefficients for this balanced equation FeCl₃ + KOH -> Fe(OH)₃ + KCl

1, 3, 1, 3

400

These are the correct coefficients when this chemical equation is balanced P₄ + O₂ -> P₂O₅

1, 5, 2

500

Is the correct coefficients for this balanced equation C₇H₁₀N + O₂ → CO₂ + H₂O + NO₂

 2, 21, 14, 10, 2

Types of Reactions

100

Al + O₂ -> Al₂O₃ is an example of this type of equation

Synthesis

200

SiO₂ + HF -> SiF₄ + H₂O is and example of this type of equation

Double replacement

300

Fe + CuSO4 ----> Cu + FeSO4 is an example of this type of reaction.

Single Replacement

400

These are products of a combustion reaction of hydrocarbon.

CO₂ and H₂O

500

Which are the product(s) of this chemical reaction? FeCl₃ + NH₄OH

Fe(OH)₃ + NH₄Cl

Solubility Rules

100

A compound made with a nitrate salt is always...

Soluble 

200

In the chemical reaction 2AgNO₃ + H₂S ---> Ag₂S +2HNO₃ what is the insoluble salt that is made?

Ag₂S

300

The compound PbCl₂ is __________ in water

insoluble

400

The correct net ionic equation for the reaction, 

BaCl₂ + Na₂SO₄ ---> BaSO₄ + NaCl

Ba⁺²(aq) +SO₄^-2(aq)---> BaSO₄ (s)

500

Write the net ionic equation for the following reaction and determine the precipitate that is formed based on solubility rules:

Aqueous solutions of lead (II) nitrate and potassium chloride are mixed.  

Pb⁺²(aq) + 2Cl^-1(aq) ---> PbCl₂(s)

Precipitate = PbCl₂