2.1 Introduction to Matter

What is matter?

• Anything that has mass.

• Anything that you can touch.

• Anything you can see.

• Anything that has mass and takes up space.

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What is Chemistry?

• The scientific study of matter and how it changes.

• The study of celestial bodies and their movements.
• The study of chemicals.

• The study of the Earth's physical structure and substance.

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A single kind of matter that is pure and has a specific set of properties.

• mixture
• substance

• compound
• solution

Which one is a physical property?

• Temperature at which water boils.

• Ability to burn.

• Whether something can react with an acid.

• Ability to rust.

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The ability of salt to dissolve in water is a _______ property.

• chemical
• biological
• mechanical
• physical

What molecule is made up of 2 hydrogen atoms and 1 oxygen atom?

• water

• helium

• hydroxygen

• carbon dioxide

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The molecule H₂O is made up of what atoms?

• 2 Hydrogen and 1 Oxygen

• 1 Hydrogen and 2 Oxygen

• 2 Helium and 1 Oxygen

• 2 Oxygen and 1 Carbon

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Carbon Dioxide (CO₂) made up of what atoms?

• 1 carbon and 2 oxygen atoms.

• 2 carbon and 1 nitrogen atom.

• 1 carbon and 1 hydrogen atom.

• 2 carbon and 2 oxygen atoms.

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The basic unit from which all matter is made.

• air

• plastic

• cell
• atom

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A group of two or more atoms held together by chemical bonds. (Example: Carbon Dioxide)

• Element
• Molecule
• Ion
• Atom

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