Chemistry Part 1

Matter is any substance that:

• contains carbon

• has volume and occupies weight
• has mass and occupies space

• is soluble in water

The simplest form of matter that contains only one type of atom is a/an:

• molecule
• compound
• ion
• element

The basic unit of all matter that cannot be divided into simpler substances by ordinary means is a/an:

• atom
• element
• molecule
• compound

Any substance made up of two or more elements joined together chemically in definite or fixed proportions is a/an:  

• molecule

• element
• solution
• mixture

When hydrogen peroxide mixes with tint and begins to oxidize, the action is a:                            

• physical change

• temporary change

• change in the state of matter

• chemical change

When a physical change occurs in a substance, there is:

• A change in the chemical composition of the substance.
• No change in the state of matter.

• A change in the molecular structure of the substance.
• A change in the form without a chemical reaction.

The pH scale measures:

• pressure
• density
• acidity or alkalinity
• temperature

What is the pH range of alkalis?

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What is the pH range of acids?

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A substance that has more hydroxide ions will be (a)   while a substance with more hydrogen ions will be ​ (b)  

• alkaline
• acidic
• neutral