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VocabularyAll about CHANGE

Chemical Reactions!

Properites Properly Stated.

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10 Point Question10 Point Question

This type of change occurs when the material keeps its own identity, but may

change in size, shape, volume, position, or phase.

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What is a Physical Change?

20 Point Question20 Point Question

This type of change occurs when one kind of matter changes into another

kind of matter with different properties.

What is a Chemical Change?

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30 Point Question30 Point Question

A log burning in a fireplace is undergoing the chemical process of

________________.

What is combustion?

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40 Point Question40 Point Question

A scientific “sentence” used to show what happens during a chemical

reaction.

What is a “Chemical Equation”?

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10 Point Question10 Point Question

Rust is an example of a ________ change.

What is chemical?

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20 Point Question20 Point Question

Water boiling is an example of a __________ change.

What is physical?

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30 Point Question30 Point Question

Name one example of combustion.

What is a log or match burning?

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40 Point Question40 Point Question

List three pieces of evidence show that a chemical reaction has occurred.

What is a color change, release of gas or energy (as in heat or light), formation of a solid.

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10 Point Question10 Point Question

In the chemical reaction carbon + oxygen --> carbon dioxide, what

is the product?

What is carbon dioxide?

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20 Point Question20 Point Question

What are the reactants in the equation of

hydrogen + oxygen --> water ?

What is hydrogen and oxygen.

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30 Point Question30 Point Question

What type of reaction is this?

2H2 + O2--> 2H20

Combination Reaction.

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40 Point Question40 Point Question

On the chalkboard, draw an example of a replacement reaction (you may just

use circles as symbols instead of element and compound names).

.

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10 Point Question10 Point Question

True or False…Chemical properties can be used to separate substances.

True

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20 Point Question20 Point Question

Name ONE of the two tests that we use to identify a substance/element. Hint: Both

tests use chemical properties to help identify the substance/element.

Universal indicator paper and the flame test.

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30 Point Question30 Point Question

We put the universal indicator in a substance and it turned bright red. Was this substance a strong acid or strong

base?

Strong acid.

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40 Point Question40 Point Question

Name one common household item that is a base.

What is soap?

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10 Point Question10 Point Question

True or False…A polymer may have thousands or millions of units in a single

chain.

True

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20 Point Question20 Point Question

In the 1940s, this life saving medicine founded by Alexander Fleming had

become real important.

What is penicillin?

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30 Point Question30 Point Question

Describe one way chemistry has improved our health.

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40 Point Question40 Point Question

What should you always read before using a chemical?

The label/directions.

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Give one example of each of the following (you may use pictures, words, or symbols for the types of reactions).

Chemical Reaction Physical Reaction

Combination Reaction Decomposition Reaction