CC LL#1 Interpreting Chemical Reactions

CC LL#1.5

Interpreting Chemical Reactions

Take Notes in Your Learning Log.

• Include at least 1 example per section

Outline:

• Indicators of Chemical Change​

• ​Chemical Reaction Models

• Law of Conservation

Indicators of Chemical Change

Interpreting Chemical Reactions​

Unit 1: Nature of Science

Multiple Choice

A copper penny turning greenish after a few years is an example of ...

• Chemical Change

• Physical Change

Multiple Choice

Bubbles form when two or more substances are combined ...

• Chemical Change

• Physical Change

Multiple Choice

Choose the best description below for the image

• physical change

• chemical change

Multiple Choice

Choose the best description below for the image

• physical change

• chemical change

Multiple Choice

Which of the following is an example

of a chemical change?

• frying eggs

• melting ice cream

• making a paper airplane

• wetting a towel

Multiple Choice

A precipitate is a 

• liquid that forms when two solids are reacted

• a solid that forms when two liquids are mixed

• a gas that forms when vinegar and baking soda react

• a change of color in a solution

Multiple Choice

 

Which is an example of a physical

change?

• a candle burning

• baking a cake

• evaporating water

• metal rusting

Multiple Choice

the starting materials in a chemical reaction

• Products

• Reactants

• Starters

• Enders

Multiple Choice

The reactants in the image above are:

• CH₄ and 2 O₂

• 2 H₂O and CO₂

• All of these are reactants

• All of these are products

Multiple Choice

Two chemicals reacted and one of the products stays dissolved in the solution (water). What symbol is used to indicate this?

• (s)

• (l)

• (aq)

• (g)

Multiple Choice

How many oxygen atoms are in the products for the chemical reaction below? $$3Fe\ +4O_2\ -->\ 2Fe_2O_3$$  

• 2

• 3

• 5

• 6

• 8

Labelling

Critical Thinking... Drag and Drop the options to the correct location

Drag labels to their correct position on the image

C

Mg

Ca

Multiple Select

Which of the following substances are SOLUBLE (dissolved) in water?

​ ​ Al_(s) + ​ ZnCl_{2 (aq)} → ​ Zn_(s) + ​ AlCl_{3 (aq)}

• Al

• ZnCl₂

• Zn

• AlCl₃

Match

Match the phase symbol with the phase it represents.

• (g)

• (l)

• (s)

• (aq)

gas

liquid

solid

aqueous

• gas

• liquid

• solid

• aqueous

Law of Conservation

Interpreting Chemical Reactions​

Unit 1: Nature of Science

Dropdown

Chemists often use the term mole to scale from the micro to the macro

In one mole of caffeine C₈H₁₀N₄O₂ there are

​ ​

Select answer

moles of carbon atoms,

​

Select answer

​moles of hydrogen atoms,

Select answer

moles of nitrogen atoms, and

​

Select answer

moles of oxygen atom

Multiple Choice

If 10 grams of water are added to 5 grams of salt, how much salt water will be made? 

• 2 grams

• 5 grams

• 10 grams

• 15 grams

Multiple Choice

In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g.

How many grams is reactant B? 

• 4g

• 5g

• 9g

• 14g

Multiple Choice

Is the following equation balanced or unbalanced?
Fe + S --> FeS

• balanced

• unbalanced

Math Response

What is the missing coefficient?

$$2KClO_3\ \rightarrow\ ??KCl\ +\ 3O_2$$  

Type answer here

Correct Answer: 2

Deg^°

Rad