Chemistry » Page 44

Chemistry

When water dissolves salt, which process is not involved?

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Christine Chambers

Chemistry

Sound travels faster in high temperatures.:

True

False

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Chemistry

in the preparation of the unknown compound 1 g of powdered charcoal was used as a catalyst for the reaction. what is the purpose of a catalyst in a chemical reaction

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Chemistry

How can a mixture of salt water be separated into salt and water

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Chemistry

What is the meaning of radioactive substance

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Chemistry

A substance made of one or more atoms of a single type is a/an

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Chemistry

Can an acidic solution oxidize a piece of aluminum? can an acidic solution oxidize a piece of aluminum? yes no

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Chemistry

How can you tell if a sample of matter is an element?

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Chemistry

Predict whether litmus paper will turn red or blue when dipped in:

a. washing powder (containing sodium carbonate)

b. orange juice (containing citric acid)

c. lemonade (containing H2CO₃)

d. cleaner (containg NH₃)

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Chemistry

Contrast the structures of ionic compounds and metals.

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Chemistry

Which of the following is made of matter?

a. the sun

b. light

c. heat

d. energy

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Chemistry

What basic equation is used to calculate the ph of a solution

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Chemistry

Compare the advantages and disanvantage of fossil fuel use

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Justus Mcfarland

Chemistry

If all of the forces acting on a car are balanced, then:

A. the direction the car is moving will not change.

B. the car will speed up.

c. the velocity of the car will increase.

D. the acceleration of the car will be negative.

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Chemistry

Explain the hydrogenation of oil

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