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Chemical reactions

Authored by MELISSA ESPINDOLA-MORENO

Science

Used 1+ times

Chemical reactions
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25 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Evidence of a chemical reactions is anything that shows - 

a new substance has formed
a solid dissolved in a liquid
interaction between 2 gases
a change in the state of matter

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Evidence of a chemical reactions is anything that shows - 

a new substance has formed
a solid dissolved in a liquid
interaction between 2 gases
a change in the state of matter

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

One of the signs of a chemical reaction taking place is:

Bubbles are produced 
Reactants are not combining
Products are not forming
Color is not changing

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following describes a precipitate?

a liquid forms when a block of metal is heated
a solid forms when one liquid is poured into another
a gas forms when a solid is placed in a liquid
bubbles form when an acid is poured on a rock

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which is NOT an indication of a chemical change?

temperature change
formation of a precipitate
shape change
production of light

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is an example that includes evidence of a chemical change?

Media Image
Media Image
Media Image
Media Image

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the evidence that a chemical change has taken place?

Color change

Light produced

state change

mixture

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