Chemistry Sem 2 Study Guide

Open Ended

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Types of Chemical Reactions

There are 4 types of reactions we will see in this class!

Categorize

Options (4)

Categorize these reactions based on the type

Synthesis

Decomposition

Single & Double Replacement

Combustion

Multiple Choice

What are the larger numbers that you CAN CHANGE in a chemical equation? 

• Coefficient 
• Subscripts

Multiple Choice

What are the smaller numbers that you CANNOT change in a chemical equation? 

• Coefficient
• Subscript

Drag and Drop

In 3P₂O₅, there are ​

Placeholder

phosphorus (P) atoms and ​

Placeholder

oxygen (O) atoms.

Drag these tiles and drop them in the correct blank above

6

15

8

3

12

21

Drag and Drop

Balance the following reaction:

​

Placeholder

C + ​

Placeholder

H₂ → ​

Placeholder

C₃H₈

Drag these tiles and drop them in the correct blank above

3

4

1

2

5

Fill in the Blank

Rhodium is the most expensive metal in the world, trading at over $10,000/oz.

What is the molar mass of rhodium (Rh)? Type ONLY the numbers

Multiple Choice

Baking soda is commonly used in baking to make food (such as bread) rise. The primary ingredient in baking soda is sodium bicarbonate (NaHCO₃).

What is the molar mass of this compound (NaHCO₃)?

• 84.01 g/mol

• 52.01 g/mol

• 107.00 g/mol

• 42.00 g/mol

Multiple Choice

Select the correct molar ratio taken from this balanced equation:

1 N­₂ + 3 H₂ --> 2 NH₃

• 1 mol N­₂ = 2 mol NH₃

• 2 mol N­₂ = 1 mol NH₃

• 3 mol N­₂ = 3 mol NH₃

To determine grams of products when given grams of reactants

​
Use Mole Map

Put all steps together

Reorder

Use the Mole Map

What are the steps to find grams of "B" if you are given grams of "A"?

• Divide by Molar Mass of A

• Use Mole Ratio from Balanced Equation to get Mole of B

• Multiply Molar Mass of B to get Mass of B

1

2

3

• 1
• 2
• 3

Multiple Choice

2Na + 2H₂O → 2NaOH+ H₂
How many grams of hydrogen are produced if 120 g of Na are available?

What is the GIVEN?

• 50 g Na

• 120 g Na

• 200g Na

• 10g Na

Multiple Choice

2Na + 2H₂O → 2NaOH+ H₂
How many grams of hydrogen are produced if 120 g of Na are available?

What is the MOLAR MASS of Na?

• 22.99 g Na

• 34.13 g Na

• 14.32 g Na

• 10g Na

Multiple Choice

2Na + 2H₂O → 2NaOH+ H₂
How many grams of hydrogen are produced if 120 g of Na are available?

What is the MOLAR MASS of H₂?

• 2 g

• 4 g

• 6 g

Multiple Choice

2Na + 2H₂O → 2NaOH+ H₂
How many grams of hydrogen are produced if 120 g of Na are available?

What is the MOLAR ratio of Na to H?

• 2:1

• 1:2

• 2:2

Multiple Choice

Pick the correct setup

2Na + 2H₂O → 2NaOH+ H₂

How many grams of H₂ are produced if 120 g of Na are available?

• $$120g\ Na\ \times\ \frac{1\ mol\ Na}{22.99gNa}\times\frac{1\ mol\ H_2}{2\ mol\ Na}\times\frac{2.02g\ H_2}{1\ mol\ H_2}$$  

• $$120g\ Na\ \times\ \frac{22.99gNa}{1\ mol\ Na}\times\frac{3\ mol\ H_2}{2\ mol\ Na}\times\frac{2.02g\ H_2}{1\ mol\ H_2}$$  

• $$120g\ Na\ \times\ \frac{1\ mol\ Na}{2.02\ gNa}\times\frac{2\ mol\ H_2}{2\ mol\ Na}\times\frac{2.02g\ H_2}{1\ mol\ H_2}$$  

• $$120g\ Na\ \times\ \frac{1\ mol\ Na}{2.02gNa}\times\frac{1\ mol\ H_2}{2\ mol\ Na}\times\frac{22.99g\ H_2}{1\ mol\ H_2}$$  

Labelling

Click and drag the labels to its correct place in the Carbon Cycle

Drag labels to their correct position on the image

Decomposition

Respiration (Plants)

Burning of Fossil Fuel

Photosynthesis

Respiration (Animals)

Multiple Choice

How many processes REMOVED Carbon from the atmosphere?

• 1

• 2

• 3

• 4

Multiple Choice

How many processes RETURNED Carbon from the atmosphere?

• 1

• 2

• 3

• 4

Multiple Choice

Based on the uneven processes that removes and places Carbon in the atmosphere, what will happen over time?

• Low amount of Carbon in the atmosphere

• Same amount of Carbon in the atmosphere

• High amount of Carbon in the atmosphere

Multiple Choice

The main human activity that releases greenhouse gases is

• riding bicycles

• burning fossil fuels

• texting on cellphones

• eating meat

Multiple Choice

Which of the following have been changed or altered due to climate change ?

• droughts

• flooding

• melting of polar ice caps

• all of the above

Multiple Select

Which of the following CAN affect reaction rates? Check all that apply.

• temperature

• concentration

• surface area

• Adding more water

Multiple Choice

How will a rate of reaction be altered if temperature is increased?

• reaction rate decreases (goes slower)

• reaction rate increases (goes faster)

• reaction rate is constant (stays the same)

Multiple Choice

When a sugar cube is crushed up, the particles get smaller. How has the surface area of the particles changed?

• the surface area increases

• the surface area decreases

• the surface area remains constant

Multiple Choice

If solution A is put into an ice water bath before being combined with solution B, how would the reaction rate be altered?

• it would be faster (rate increases)

• it would be slower (rate decreases)

• it would stay the same

Labelling

Label parts of this pH scale

Drag labels to their correct position on the image

Drain cleaner

Water

Acid

Base

Neutral

Car Battery

Multiple Choice

What is made when an ACID is mixed with water?

• H+

• OH-

Multiple Choice

What is made when a BASE is mixed with water?

• H+

• OH-

Multiple Choice

What is made when an ACID is mixed with a BASE?

• H2O Water

• Another acid

• Another base

Multiple Choice

If the [H₃O⁺] of a solution is 6.8 x 10^-8 M, the pH is

• 7.17

• 3.2 x 10^-5

• 7.2

• 7.62

Multiple Select

If a solution has a pOH of 1 what is the pH? Is it an acid or base? (pick 2)

• acid

• base

• 13

• 1

• neutral

Multiple Choice

The _________is the electrode where POSITIVE charges are stored.

• anode

• cathode

Multiple Choice

The _________is the electrode where NEGATIVE charges are stored.

• anode

• cathode

Multiple Choice

An electron difference between both sides is called

• voltage

• current

Labelling

Label the + and - sides of the periodic table

Drag labels to their correct position on the image

Negative side (-)

Positive side (+)

Electron flow --->