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Chemical Change 2

Authored by Cheryl Bocock

Science

7th Grade

Used 2+ times

Chemical Change 2
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18 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you know that rusting is a chemical change?

it changes color

atoms were rearranged to form a new substance

we just know

the rust

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What property of metals does the term conductivity describe? (HINT: Think back to 6th grade.)

reactivity with other elements

melting & freezing point

ability to transfer heat and electrcity

density

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does an element's location on the periodic table tell you?

info about the properties of the element

importance & abundance if the elements

order of discovery

alphabetical order

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The following are examples of evidence of a chemical reaction....

ice melting into a liquid

condensation

endothermic reaction

change in color, production of gas bubbles

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when a new substance is produced during a reaction?

physical change

chemical change

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A green powder is heated & a gas is given off while it turns to a black solid. This describes

Physical Change

Chemical Change

Change in State

Change in Temperature

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following could indicate that a chemical change took place?

Change in color

Production of Energy

Formation of Gas

All are correct

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