A student measures out 100 mL of two different clear liquids and then pours one into the other. The mixture, which has volume of 200 mL, turns bright red, then begins to become quite cold. In this process, the first evidence that a new substance had formed was observed when the...

temperature of the mixture decreased.

Four mixtures are made by combining two clear liquids and observations are made. Which results indicate that a new substance has formed?

Mixture 2: The liquids, when mixed, produce a white solid which settles to the bottom.

Mixture 1: The combined liquids have a greater mass than either of the starting liquids.

Mixture 3: The mixture of the two liquids takes the shape of the container they are in,

Mixture 4: The denser of the two liquids lies below the other less dense liquid.

When a piece of iron rusts, it forms a new substance. What type of change is this and why?

B) Chemical, because a new substance is formed

A) Physical, because the iron changes color

C) Physical, because the iron can be restored by polishing

D) Chemical, because the iron remains solid

A student mixes baking soda and vinegar in a beaker. Bubbles form and the mixture fizzes. What does this indicate about the reaction?

B) A chemical change occurred because a gas is produced

A) A physical change occurred because the substances are still visible

C) A physical change occurred because the temperature remains constant

D) A chemical change occurred because the mixture can be separated by filtration

Formation of a New Substance

Authored by Lisa Thompson

Science

6th Grade

NGSS covered

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15 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

A CHANGE that alters (changes) the identity of a substance and results in a NEW substance with DIFFERENT properties.

Chemical Change

Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Evidence of a NEW substance formed from a chemical change is...

Production of Gas

Production of Heat and Light

Production of a Precipitate

Tags

NGSS.MS-PS1-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Evidence of a NEW substance formed from a chemical change, resulting in SOLID particles that form or separate out of a liquid is...

Production of Heat or Light

Production of a Precipitate

Production of Gas

Tags

NGSS.MS-PS1-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A student stirs two liquids together and they turn into a solid. What type of change has happened and why?

chemical, because a change instate of matter always means a chemical change

physical, because it was stirred

chemical, because a new substance was formed

Tags

NGSS.MS-PS1-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A substance made of TWO or more elements that are CHEMICALLY combined in fixed amounts is...

Substance

Element

Compound

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

INCREASE or DECREASE of heat energy in a substance may be evidence of a NEW substance formed during a chemical change because of...

Color Change

Temperature Change

No change at all

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Striking a match is a...

Chemical Change

Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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Formation of a New Substance

A CHANGE that alters (changes) the identity of a substance and results in a NEW substance with DIFFERENT properties.

Evidence of a NEW substance formed from a chemical change is...

Evidence of a NEW substance formed from a chemical change, resulting in SOLID particles that form or separate out of a liquid is...

A student stirs two liquids together and they turn into a solid. What type of change has happened and why?

A substance made of TWO or more elements that are CHEMICALLY combined in fixed amounts is...

INCREASE or DECREASE of heat energy in a substance may be evidence of a NEW substance formed during a chemical change because of...

Striking a match is a...

Baking cake batter into a cake is a...

Four substances were mixed with clear liquid. The observations are recorded in the following table. Based on the observations, for which mixture is there the best evidence that a new substance was formed?

A student measures out 100 mL of two different clear liquids and then pours one into the other. The mixture, which has volume of 200 mL, turns bright red, then begins to become quite cold. In this process, the first evidence that a new substance had formed was observed when the...

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