A molecule is________

more than one atom bonded together

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

a substance formed as a result of a chemical reaction

a change in matter that produces one or more new substances

a substance that enters into a chemical reaction

A representation of a chemical reaction

the starting materials in a chemical reaction

the new substances that are formed in a chemical reaction

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

Will there be leftover reactants from this reaction?

Yes. You will have three NH 3 and 1 O 2 molecule.

No, this reaction will make precisely 4NO 2 and 6 H 2 O molecules.

Yes. You will have 2 leftover NH 3 and 2 O 2 molecules.

Yes. You will only have oxygen molecules remaining

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?

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

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

502 grams, because the cheese absorbs heat as it melts

MS-PS1-5

Authored by Jeff Grom

Science

8th Grade

NGSS covered

Used 389+ times

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41 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

True

False

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The Law of Conservation of Mass states

that matter exists in all states and reacts the same

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

that matter exists in the same state throughout any chemical change

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

Tags

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many Al atoms are in this compound? 4Al₂O₃

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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

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

they start out separate and end up combined

the same elements are used

it doesn't demonstrate the Law of Conservation of Mass

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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

the product is doubled

the product is half the mass of the reactants

the mass is the same

the mass changes depending on the reaction

Tags

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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?

5g of gas was produced

This experiment violates the conservation of mass

7g of gas was produced

The excess reactant is destroyed & disappears during the reaction

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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?

47g

13g

23g

You cant tell with the given information

Tags

NGSS.MS-PS1-5

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MS-PS1-5

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

The Law of Conservation of Mass states

How many Al atoms are in this compound? 4Al₂O₃

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

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

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?

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?

A molecule made of 2 atoms is called a ____________________.

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

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

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

MS-PS1-5

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

The Law of Conservation of Mass states

How many Al atoms are in this compound? 4Al2O3

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

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

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?

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?

A molecule made of 2 atoms is called a ____________________.

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

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

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

How many Al atoms are in this compound? 4Al₂O₃