The Language of Chemistry
Reading Chemical Equations
Balancing
Chemical Equations
Chemical Reactions
Misc.
100

An elemental symbol is most similar to

a. word

b. sentence

c. letter

c. letter

100

How do you read this symbol?

-->

react to form

100

Balance the equation then list the coefficients in order:

__K + __Cl2 --> __KCl

2, 1, 2

2K + Cl2 --> 2KCl

100

List the four types of evidence you can use to determine if a chemical reaction occurred.

color change, temperature change, gas emission (bubbles), precipitate formation (solid from solution)

100

Name the two solutions we poured together in reaction 2 of the chemical reactions lab. (or give their chemical formulas)


sodium carbonate and copper (II) sulfate

200

Chemical Equation is most similar to:
a. sentence

b. word

c. letter

Sentence

200

How do you read this symbol?

+

and

200

Balance the equation then list the coefficients in order:

NaCl+F2-->NaF+Cl2

2NaCl+F2-->2NaF+Cl2

200

Identify the type of reaction: 

2 Ag2O → 4 Ag + O2

Decomposition

200

What kind of reaction is this?

2 AlBr3+ 3 K2SO4 → 6 KBr + Al2(SO4)3

Double replacement

300

Chemical Formula is most similar to:
a. sentence

b. word

c. letter












b. word

300

Convert the word problem into a skeleton equation:

Sodium chloride and fluorine gas (F2)  react to form sodium fluoride and chlorine gas (Cl2). 

NaCl+F2-->NaF+Cl2

300

Based on the equation below, is conservation of mass observed? Explain your reasoning

Mg (s)+ 2 HCl (aq)-->MgCl2 (aq) +H2 (g)

Yes, there are the same number of atoms of each element on either side of the equation. 

i.e. 2 hydrogen atoms on the reactant side and 2 hydrogen atoms on the product side.

300
  1. What is the precipitate formed in the reaction below: 

CuSO4(aq)+ Na2CO3 (aq)-->CuCO3(s) + NaSO4 (aq) 

CuCO3(s)

300

What kind of reaction is this?

CH4 + 2 O2 → CO2 + 2 H2O

Combustion

400

Which gives you the number of atoms in a compound?

a. Subscript

b. Coefficient

Subscript

400

Read the following equation:

Mg (s)+ 2 HCl (aq) --> MgCl2 (aq) +H2 (g)

Magnesium and hydrogen chloride react to form magnesium chloride and hydrogen.

400

Balance the equation then list the coefficients in order:

__ H2+__NO→__H2O+__N2

2, 2, 2, 1

2 H2+2 NO→2H2O+N2

400

What type of reaction is 2H2(g)+O2(g)-->2H2O(l)?

Synthesis

400

Would this reaction give a precipitate?

NaOH(aq)+HCl(aq)→NaCl(aq)+H2O(l)

No, there is no solid on the products side of the equation.

500

Which gives you the number of compounds in a reaction?

a. Subscript

b. Coefficient

Coefficient

500

Read the following equation: 

CaCl2+H2O→HCl+Ca(OH)2

Calcium chloride and water (H2O)  react to form hydrogen chloride and calcium hydroxide.

500

Balance the equation then list the coefficients in order:

__AlBr3 + __K2SO4-->__KBr + __Al2(SO4)3

2, 3, 6, 1

2AlBr3 + 3K2SO4-->6KBr + Al2(SO4)3

500

What type of reaction is  2 C4H10 + 13 O2 → 8 CO2 + 10 H2O?

Combustion

500

Give a procedure for the performing the following chemical reaction: 

NaOH(aq)+HCl(aq)→NaCl(aq)+H2O(l)

Add one pipette of NaOH to a test tube. Add one pipette of HCl to another test tube. Record your initial observations. At your lab station, pour NaOH into the HCl test tube. Record your during/after reaction observations to check for temperature change, color change, precipitate formation, and gas emission.