Quiz about MS-PS1-5

Question 1

Everything to the left of the arrow in the picture are called products.

Accepted Answer

False

Answer

True

Question 2

The Law of Conservation of Mass states

Accepted Answer

that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants

Answer

that matter exists in all states and reacts the same

Answer

that matter can only be changed into new substances by introducing a catalyst

Answer

that matter exists in the same state throughout any chemical change

Question 3

How many Al atoms are in this compound? 4Al₂O₃

Accepted Answer

8

Answer

2

Answer

6

Answer

4

Question 4

Why does this picture demonstrate the Law of Conservation of Mass?

Accepted Answer

the number of atoms of each element are the same on both sides

Answer

they start out separate and end up combined

Answer

the same elements are used

Answer

it doesn't demonstrate the Law of Conservation of Mass

Question 5

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

Accepted Answer

the mass is the same

Answer

the product is doubled

Answer

the product is half the mass of the reactants

Answer

the mass changes depending on the reaction

Question 6

10g of white powder reacts with 10g of clear liquid. The reaction bubbles and changes color producing a black liquid that has a mass of 13g. What can be concluded?

Accepted Answer

7g of gas was produced

Answer

5g of gas was produced

Answer

This experiment violates the conservation of mass

Answer

The excess reactant is destroyed & disappears during the reaction

Question 7

There are two reactants in a chemical equation, and one product.  The mass of the product is 30g.  The mass of the first reactant is 17g.  What must the mass of the second reactant be, if the equation is to follow the law of conservation of mass?

Accepted Answer

13g

Answer

47g

Answer

23g

Answer

You cant tell with the given information

Question 8

A molecule made of 2 atoms is called a ____________________.

Accepted Answer

Diatomic Molecule

Answer

Chemical Bond

Answer

Product

Answer

Reactant

Question 9

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 10

What type of reaction involves one element replacing another element in a compound?

Accepted Answer

Single Displacement Reaction

Answer

Double Displacement Reaction

Answer

Synthesis Reaction

Answer

Decomposition Reaction

Question 11

What are the reactants in the chemical equation pictured?

Accepted Answer

CH₄ and O₂

Answer

CH₄ and CO₂

Answer

CO₂ and H₂O

Answer

O₂ and H₂O

Question 12

What are the products of the chemical reaction pictured?

Accepted Answer

CO₂ and H₂O

Answer

CH₄ and CO₂

Answer

CH₄ and O₂

Answer

O₂ and H₂O

Question 13

What is the large number written before a chemical formula called?

Accepted Answer

Coefficient

Answer

Subscript

Answer

Reactant

Answer

Product

Question 14

What is the small number written after a chemical symbol called?

Accepted Answer

Subscript

Answer

Coefficient

Answer

Product

Answer

Reactant

Question 15

What is a shorthand notation that represents a compound or molecule called?

Accepted Answer

Chemical Formula

Answer

Chemical Equation

Answer

Chemical Reaction

Answer

Chemical

Question 16

A molecule is smaller than an atom.

Accepted Answer

False

Answer

True

Question 17

A molecule is________

Accepted Answer

more than one atom bonded together

Answer

a glob of gelatinous goo

Answer

smaller than an atom

Answer

filled with raisons

Question 18

Chemical Reaction

Accepted Answer

the process in which substances undergo chemical changes that result in the formation of new substances

Answer

a substance formed as a result of a chemical reaction

Answer

a change in matter that produces one or more new substances

Answer

a substance that enters into a chemical reaction

Question 19

Chemical Equation

Accepted Answer

A representation of a chemical reaction

Answer

the starting materials in a chemical reaction

Answer

the new substances that are formed in a chemical reaction

Answer

tells how many atoms, molecules, or formula units take part in a reaction

Question 20

Is this equation balanced?

Accepted Answer

no

Answer

yes

Answer

Not enough information

Question 21

Is this equation balanced?

Accepted Answer

yes

Answer

no

Answer

Not enough information

Question 22

The chemical formula of glucose is C₆H₁₂O_6.Is glucose an element, compound, or mixture?

Accepted Answer

compound

Answer

element

Answer

mixture

Question 23

Which section represents the reactants?

Accepted Answer

A

Answer

B

Answer

C

Question 24

Why does this picture demonstrate the Law of Conservation of Mass?

Accepted Answer

the number of atoms of each element are the same on both sides

Answer

they start out separate and end up combined

Answer

the same elements are used

Answer

it doesn't demonstrate the Law of Conservation of Mass

Question 25

Air is an example of a

Accepted Answer

gas

Answer

solid

Answer

liquid

Question 26

How many oxygen atoms are in this chemical formula?

Accepted Answer

4 oxygen atoms

Answer

7 oxygen atoms

Answer

3 oxygen atoms

Answer

1 oxygen atoms

Question 27

How many oxygen atoms are in this chemical formula?

Accepted Answer

6 oxygen atoms

Answer

2 oxygen atoms

Answer

3 oxygen atoms

Answer

4 oxygen atoms

Question 28

Law of conservation of mass states that

Accepted Answer

matter is neither created nor destroyed

Answer

matter is created

Answer

matter is destroyed

Answer

matter does not change

Question 29

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

Accepted Answer

the mass is the same

Answer

the product is doubled

Answer

the product is half the mass of the reactants

Answer

the mass changes depending on the reaction

Question 30

If reaction starts with 20g of reactants it should produce...

Accepted Answer

a total of 20g of product

Answer

a total of 40g of product

Answer

a total of 10g of product

Answer

a total of 80 g of product

Question 31

10g of white powder reacts with 10g of clear liquid. The reaction bubbles and changes color producing a black liquid that has a mass of 13g. What can be concluded?

Accepted Answer

7g of gas was produced

Answer

5g of gas was produced

Answer

This experiment violates the conservation of mass

Answer

The excess reactant is destroyed & disappears during the reaction

Question 32

How many nitrogen atoms does NH₃ have?

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 33

How many NH₃ molecules did this reaction start out with?

Accepted Answer

7

Answer

4

Answer

2

Answer

1

Question 34

With the reactants shown here, how many CO₂ molecules will the reaction produce?

Accepted Answer

5

Answer

4

Answer

3

Answer

2

Question 35

How many NO₂ Molecules can you produce from the reactants shown?

Accepted Answer

4

Answer

8

Answer

12

Answer

16

Question 36

Will there be leftover reactants from this reaction?

Accepted Answer

Yes. You will have three NH₃ and 1 O₂ molecule.

Answer

No, this reaction will make precisely 4NO₂ and 6 H₂O molecules.

Answer

Yes. You will have 2 leftover NH₃ and 2 O₂ molecules.

Answer

Yes. You will only have oxygen molecules remaining

Question 37

There are two reactants in a chemical equation, and one product.  The mass of the product is 30g.  The mass of the first reactant is 17g.  What must the mass of the second reactant be, if the equation is to follow the law of conservation of mass?

Accepted Answer

13g

Answer

47g

Answer

23g

Answer

You cant tell with the given information

Question 38

New material(s) that is formed in a chemical reaction

Accepted Answer

Product(s)

Answer

Reactant(s)

Answer

Subscript(s)

Answer

Coefficient(s)

Question 39

How many O atoms are in the following formula?
2Na + 2H₂O

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 40

A 500-gram block of solid cheese is melted in a pot. Which is most likely the mass of the cheese after it is melted?

Accepted Answer

500 grams, because the cheese does not gain or lose mass just because it was melted

Answer

499 grams, because some of the cheese evaporates as it melts

Answer

502 grams, because the cheese absorbs heat as it melts

Question 41

Maria fills a bowl with 200 g of water. She puts the bowl of water in the freezer, and the water freezes. Which will most likely be the mass of the frozen water?

Accepted Answer

200 g

Answer

50 g

Answer

100 g

Answer

400 g

MS-PS1-5

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