Endothermic reactions...

have higher energy in their reactants than the products

have higher energy in their products than their reactants

Students react baking soda & vinegar. Which of the following would provide the evidence that the number of atoms present before a chemical reaction is equal to the number of atoms present after the chemical reaction?

The mass of the plastic bag, baking soda, and vinegar before the reaction was equal to the mass after the reaction.

Bubbles were produced during the reaction, which meant that a gas was being produced.

The plastic bag did not change in any way, indicating that it was not involved in the reaction.

The mass of the baking soda was exactly equal to the mass of the vinegar used to create the chemical reaction.

When CaCO 3 is heated, it forms CaO and CO 2 . Which of these statements best describes the mass of the products if 100 g of CaCO 3 is heated?

The sum of the products’ masses equals the mass of the CaCO 3

The difference in the products’ masses is equal to the mass of the CaCO 3

The sum of the products’ masses is less than the mass of the CaCO 3

The mass of each product is equal to the mass of the CaCO 3

A group of atoms bonded together

Basic unit of a chemical element

Suppose a reaction were to happen in an open container in a lab. During the reaction, the scientist observes the chemicals bubble, and produce a gas. During the analysis the scientist notices that the reactants weighed 20 g when he started, and the product weighed 18 g. Explain what happened.

The gas that was produced was not able to be weighed since the container was open.

His chemical reaction defied the law of conservation of mass

The product destroyed mass during the reaction

The reactants created matter during the reaction

10 g of a solid chemical reacts with a 10 g of a liquid chemical, the reaction bubbles and changes the color of the liquid. The colored liquid weighs 13 g, what can be concluded?

The gas produced from the bubbles weighed 5 g

The bubbles were evidence of 7 g of matter being destroyed

Law of Conservation of Mass

8th Grade

•

25 Qs

Similar activities

science study !

7th - 8th Grade

•

20 Qs

History of the Atom and Basic Atomic Structure

6th - 12th Grade

•

20 Qs

SEDASEED 2020 - Wind and Kinetics

6th - 12th Grade

•

20 Qs

Year 8 Elements and Compounds

7th - 10th Grade

•

20 Qs

Fall Final Chemistry

8th Grade - University

•

20 Qs

Separating Mixtures

7th - 10th Grade

•

20 Qs

Potions Chemical Reactions

6th - 8th Grade

•

20 Qs

8th grade atomic theory quiz (use ptable.com)

8th Grade

•

20 Qs

Law of Conservation of Mass

Quiz

•

Chemistry

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-5, MS-PS1-1, MS-PS1-4

Standards-aligned

Latisha King

Used 902+ times

FREE Resource

25 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 12 pts

What is the Law of Conservation of mass?

Mass is created in a chemical reaction

Mass is created in a physical change

New chemicals formed from a chemical reaction have a larger overall mass than the original reactants

Mass is never created or destroyed

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have?

14g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have?

14g

Tags

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The number in front of a compound or element is a

Subscript

Coefficient

Superscript

Charge

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The number to the lower side of an element is a

Subscript

Superscript

Coefficient

Charge

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Matter can not be created nor destroyed: it can only be

Destroyed a little bit

Invisible

Transformed, changed

None of the above

Tags

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which is Chemical Equation is Balanced?

CH₄+O₂------CO₂+2H₂O

H₂+O₂-----2H₂O₄

4Al+3O₂-----2Al₂O₃

Tags

NGSS.MS-PS1-5

Create a free account and access millions of resources

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever

or continue with

Microsoft

Apple

Others

Already have an account?

Similar Resources on Wayground

20 questions

Jadual Berkala Unsur

Quiz

•

KG - University

20 questions

Properties of Matter

Quiz

•

6th - 9th Grade

20 questions

New Stuff From Old Stuff Review

Quiz

•

7th - 8th Grade

20 questions

Atmosphere and Global Warming

Quiz

•

8th - 9th Grade

21 questions

Chemistry language beginnings

Quiz

•

8th Grade

20 questions

Matter Models

Quiz

•

8th - 10th Grade

20 questions

Mixtures and Separation techniques

Quiz

•

7th - 8th Grade

25 questions

Naming and Balancing Chemical Reactions Review

Quiz

•

6th - 12th Grade

Popular Resources on Wayground

5 questions

This is not a...winter edition (Drawing game)

Quiz

•

1st - 5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

10 questions

Identify Iconic Christmas Movie Scenes

Interactive video

•

6th - 10th Grade

20 questions

Christmas Trivia

Quiz

•

6th - 8th Grade

18 questions

Kids Christmas Trivia

Quiz

•

KG - 5th Grade

11 questions

How well do you know your Christmas Characters?

Lesson

•

3rd Grade

14 questions

Christmas Trivia

Quiz

•

5th Grade

20 questions

How the Grinch Stole Christmas

Quiz

•

5th Grade

Discover more resources for Chemistry

17 questions

Balancing Equations

Quiz

•

6th - 8th Grade

6 questions

Chemical Formulas

Lesson

•

6th - 8th Grade

31 questions

Science of Christmas

Quiz

•

8th Grade

Law of Conservation of Mass

25 questions

What is the Law of Conservation of mass?

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have?

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have?

The number in front of a compound or element is a

The number to the lower side of an element is a

Matter can not be created nor destroyed: it can only be

Which is Chemical Equation is Balanced?

How many nitrogen atoms does NH₃ have?

Is this equation balanced or unbalanced?
2Fe₂O₃ + 3C --> 4Fe + 3 CO₂

How many oxygen atoms are in this chemical formula?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Chemistry

Law of Conservation of Mass

25 questions

What is the Law of Conservation of mass?

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have?

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have?

The number in front of a compound or element is a

The number to the lower side of an element is a

Matter can not be created nor destroyed: it can only be

Which is Chemical Equation is Balanced?

How many nitrogen atoms does NH3 have?

Is this equation balanced or unbalanced? 2Fe2O3 + 3C --> 4Fe + 3 CO2

How many oxygen atoms are in this chemical formula?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Chemistry

How many nitrogen atoms does NH₃ have?

Is this equation balanced or unbalanced?
2Fe₂O₃ + 3C --> 4Fe + 3 CO₂