Savvas Chemical Reactions

Presentation

•

Science

•

8th - 9th Grade

•

Hard

Joseph Anderson

FREE Resource

31 Slides • 28 Questions

Lesson: Chemical Reactions

By William Lovering

Multiple Choice

One of the signs of a chemical reaction taking place is:

Bubbles are produced

Reactants are not combining

Products are not forming

Color is not changing

Multiple Choice

Which of the following describes a precipitate?

a liquid forms when a block of metal is heated

a solid forms when one liquid is poured into another

a gas forms when a solid is placed in a liquid

bubbles form when an acid is poured on a rock

Multiple Choice

A clear liquid from a flask is poured into another clear liquid in a beaker. Which of the following results of this procedure would indicate a new substance was formed?

The level of the substance in the beaker is higher after the other liquid is added.

A yellow solid forms and then settles to the bottom of the beaker.

Small white crystals are left behind in the flask that held the first liquid.

The mass of the combined liquids is greater than either original liquid.

Multiple Choice

The word "yields" describing a chemical reaction means

to make or create something

combine in water

causes a reaction to stop

heat must be added

Multiple Choice

Each substance in a chemical reaction is called a

reactant

product

species

compound

Fill in the Blanks

Type answer...

Fill in the Blanks

Type answer...

Multiple Choice

Species in a chemical equation are separated by

-->

(s)

coefficient

Multiple Choice

What does the number ₃ represent in 4NH₃?

Subscript

Superscript

Coefficient

Multiple Choice

What does the number 4 represent in 4NH₃?

Subscript

Superscript

Coefficient

Multiple Choice

How many Nitrogen (N) atoms are in 4NH₃?

Multiple Choice

How many Hydrogen (H) atoms are in 4NH₃?

Multiple Choice

How many total molecules is 4NH₃?

Multiple Choice

How many total atoms make up 4NH₃?

Multiple Choice

In the equation shown, what are the product(s)?

N₂+ H₂

NH₃

Multiple Choice

To balance an equation you should:

ONLY change subscripts.

ONLY change coefficients.

Change BOTH subscripts and coefficients.

Multiple Choice

What is the left part of a chemical equation called?

2H₂ + O₂ ---> 2H₂O

Reactants

Yields

Products

Chemical equation

Multiple Choice

What is the right part of a chemical equation called?

2H₂ + O₂ ---> 2H₂O

Reactants

Yields

Products

Chemical Equation

Multiple Choice

Complete the sentence.

During a chemical reaction, atoms ________.

can appear

can disappear

get rearranged

stop moving and vibrating

Multiple Choice

What is the Law of Conservation of Mass?

It states that matter cannot be created or destroyed.

It states that energy cannot be created or destroyed.

It states that matter can be created or destroyed.

It states that sound can be created or destroyed.

Multiple Choice

Balance the following equation:

___ H₂+ ___ O₂→___ H₂O

1, 1, 3

2, 2, 2

1, 2, 1

2,1, 2

Multiple Choice

What type of reaction is the equation C + O₂→ CO₂?

Synthesis

Decomposition

Single Replacement

Double Replacement

Multiple Choice

What type of reaction is the equation

2NaCl → 2Na + Cl₂?

Synthesis

Decomposition

Single Replacement

Double Replacement

Multiple Choice

What type of reaction is the equation

MgCl₂ + Li₂CO₃ → MgCO₃ + 2 LiCl

Synthesis

Decomposition

Single Replacement

Double Replacement

Multiple Choice

What type of reaction is the equation

3Pb + 2H₃PO₄ → 3H₂ + 1Pb₃(PO₄)₂

Synthesis

Decomposition

Single Replacement

Double Replacement

Multiple Choice

What type of reaction is the equation

Pb + FeSO₄ → PbSO₄ + Fe

Synthesis

Decomposition

Single Replacement

Double Replacement

Multiple Choice

What type of reaction is the equation

CaCO₃ → CaO + CO₂

Synthesis

Decomposition

Single Replacement

Double Replacement

Multiple Choice

What type of reaction is the equation

P₄ + 3 O₂ → 2 P₂O₃

Synthesis

Decomposition

Single Replacement

Double Replacement

Lesson: Chemical Reactions

By William Lovering

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