Quiz about Parts of a Chemical Reaction

Question 1

Number seven (7) is indicating ____ of the equation.

Accepted Answer

products

Answer

reactants

Answer

equation

Answer

formulas

Question 2

Number five (5) is indicating ____ of the equation.

Accepted Answer

aqueous

Answer

solid

Answer

liquid

Answer

gas

Question 3

The three (3) indicates which part?

Accepted Answer

reactants

Answer

products

Answer

equation

Answer

formulas

Question 4

The two (2) is indicating _________.

Accepted Answer

coefficients

Answer

subscripts

Answer

reactants

Answer

aqueous

Question 5

What type of reaction involves the breaking down of a substance into simpler substances?

Accepted Answer

Decomposition Reaction

Answer

Single Displacement Reaction

Answer

Double Displacement Reaction

Answer

Synthesis Reaction

Question 6

What part of the equation does the #1 represent?

Accepted Answer

produces/yields

Answer

product

Answer

solid

Answer

reactant

Question 7

What is a Reactant?

Accepted Answer

The substance changed in a chemical reaction.

Answer

The end result of a chemical reaction.

Answer

The arrow that separates the product from the reactant.

Answer

The number to the lower right of an element that shows the number of atoms.

Question 8

______ is the end result of a chemical reaction.

Accepted Answer

Product

Answer

Yield

Answer

Subscript

Answer

Reactant

Question 9

Number eight (8) is indicating ____ of the equation.

Accepted Answer

gas

Answer

solid

Answer

liquid

Answer

aqueous

Question 10

The number four (4) represents which part of the equation?

Accepted Answer

solid

Answer

aqueous

Answer

gas

Answer

liquid

Question 11

What is the part of a chemical equation called?
2H_{2 +}O₂ --> 2H₂O

Accepted Answer

Reactants

Answer

Products

Answer

Yields

Answer

Chemical Equation

Question 12

What is a chemical equation?

Accepted Answer

A written description of a chemical reaction.

Answer

Describes the number of elements in a compound.

Answer

One or two letters that represent the elements on the periodic table.

Answer

The number to the lower right of an element that shows the number of atoms bonded.

Question 13

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

Accepted Answer

Subscript

Answer

Coefficient

Answer

Products

Answer

Reactants

Question 14

Is the following equation balanced?...
Al + O₂ --> 2Al₂O₃

Accepted Answer

No!

Answer

Yes!

Question 15

When you mix two liquids and get a solid like these examples, that's called a _____________.

Accepted Answer

precipitate

Answer

color change

Answer

change in state

Question 16

All of the atoms in the reactants end up in the products and no atoms are created or destroyed. This is known as the ______.

Accepted Answer

Law of Conservation of Mass (or Matter)

Answer

Law of Chemistry

Answer

Law of Balances

Question 17

Two clear liquids are mixed and this is the result. Has a chemical reaction taken place?

Accepted Answer

yes

Answer

no

Question 18

What is a Product in a chemical reaction?

Accepted Answer

The end result of a chemical reaction.

Answer

The starting material in a chemical reaction.

Answer

The catalyst used in a chemical reaction.

Answer

The energy released during a chemical reaction.

Question 19

In the chemical equation $$\ce{2H2 + O2 -> 2H2O}$$ , what does the arrow represent?

Accepted Answer

Yields

Answer

Reactants

Answer

Products

Answer

Subscripts

Question 20

Which of the following is a Reactant in the equation $$\ce{CH4 + 2O2 -> CO2 + 2H2O}$$ ?

Accepted Answer

$$\ce{CH4}$$

Answer

$$\ce{CO2}$$

Answer

$$\ce{H2O}$$

Answer

$$\ce{O2}$$

Question 21

What is the role of a Catalyst in a chemical reaction?

Accepted Answer

It increases the rate of the reaction without being consumed.

Answer

It is consumed in the reaction.

Answer

It decreases the rate of the reaction.

Answer

It is the product of the reaction.

Question 22

In a chemical reaction, what does the term 'Subscript' refer to?

Accepted Answer

The number of atoms of an element in a molecule.

Answer

The number of molecules involved in the reaction.

Answer

The total mass of the reactants.

Answer

The energy change during the reaction.

Question 23

What is the purpose of balancing a chemical equation?

Accepted Answer

To satisfy the law of conservation of mass.

Answer

To ensure the reactants are completely used up.

Answer

To ensure the products are formed in excess.

Answer

To make the reaction faster.

Question 24

Which part of a chemical reaction is typically written on the left side of a chemical equation?

Accepted Answer

Reactants

Answer

Products

Answer

Catalysts

Answer

Subscripts

Question 25

What does the term 'Coefficient' in a chemical equation indicate?

Accepted Answer

The number of molecules or moles of a substance.

Answer

The number of atoms in a molecule.

Answer

The energy change in the reaction.

Answer

The type of reaction taking place.

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