Can matter be created or destroyed?

No, Law of Conservation of Mass states matter cannot be created or destroyed.

Yes, you can always make more things.

Jonah realizes that even though he is crushing the cans, the amount of material in each can is unchanged. Which of the following describes the process that is taking place?

a change in form or appearance of matter

a change in chemical bonds within the object

Your teacher has just done a class demonstration. She poured vinegar into a beaker with baking soda. There was quite a bit of fizzing, as shown in the figure. Did mixing the vinegar and baking soda produce a physical change or a chemical change? Explain.

It was a chemical change because something new was made and bubbles were present.

It was a physical change because nothing new was made.

It was a chemical change because nothing new was made.

It was a physical change because something new was made and bubbles were present.

Your teacher has just done a class demonstration. She poured vinegar into a beaker with baking soda. There was quite a bit of fizzing, as shown in the figure. Your teacher found that the mass of the products was less than the mass of the reactants. Does the loss of mass disprove the law of conservation of matter? Explain.

No, because matter is never created or destroyed. The loss of mass was from the gas that is difficult to measure and energy can only be transferred.

Yes, because there was a loss in mass and matter can be created or destroyed.

Yes, because bubbles were created making the mass less.

No, because matter can be created or destroyed.

Look at the structural models of diamond and graphite. Use the picture to help you answer the question. Think about the structure of graphite. Which of the following makes graphite a good choice for use in a pencil?

Carbon atoms in graphite are only connected to two other atoms allowing them to slide around. This makes graphite soft enough to rub off on paper.

Carbon atoms in graphite are arranged in a rigid pattern that makes graphite hard. This makes graphite hard enough to rub off paper.

Carbon atoms are in an irregular pattern in graphite allowing movement in all directions. This makes graphite soft enough to form into lead.

Carbon atoms in graphite are in a tetrahedron shape making it one of the harder materials known. This makes graphite soft enough to write on any surface.

Intro to Matter Review

7th Grade

•

18 Qs

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Intro to Matter Review

Quiz

•

Science

•

7th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-5, MS-PS1-2, MS-PS1-4

Standards-aligned

Melissa Le

Used 6+ times

FREE Resource

18 questions

Show all answers

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Define matter.

any that takes up space and has mass

amount of matter in an object

amount of space that matter occupies, or takes up

measure of mass of material in a given volume

Define mass.

any that takes up space and has mass

amount of matter in an object

amount of space that matter occupies, or takes up

measure of mass of material in a given volume

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Define volume.

any that takes up space and has mass

amount of matter in an object

amount of space that matter occupies, or takes up

measure of mass of material in a given volume

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Define density.

any that takes up space and has mass

amount of matter in an object

amount of space that matter occupies, or takes up

measure of mass of material in a given volume

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is physical change?

alters the form or appearance of of matter but does NOT turn any substance into a different substance

change in matter that produces one or more new substances ; single substance breaks down into two or more substances, also known as chemical reaction

What is chemical change?

alters the form or appearance of of matter but does NOT turn any substance into a different substance

change in matter that produces one or more new substances ; single substance breaks down into two or more substances, also known as chemical reaction

What is the formula for density?

mass + volume

mass - volume

mass x volume

mass / volume

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Intro to Matter Review

18 questions

Define matter.

Define mass.

Define volume.

Define density.

What is physical change?

What is chemical change?

What is the formula for density?

What is chemical change?

Can matter be created or destroyed?

Which liquid sinks to the bottom?

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