Chap 7 Matter and Its Properties

The smallest unit of an element that retains its characteristics or properties.

• atom

• particle model of matter

• chemical element

• chemical compound

Allows to visualize atoms in a simple way.

• atom

• particle model of matter

• chemical element

• chemical compound

A pure substance that is formed when two or more atoms of different elements are combined.

• atom

• particle model of matter

• chemical element

• chemical compound

The basic material that can't be separated in the simplest substances.

• atom

• particle model of matter

• chemical element

• chemical compound

Identify between element and compound

Groups:

(a) Element

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(b) Compound

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What atoms are found in CH₄ (methane)?

• 4 carbons and 4 hydrogens

• 1 carbon and 1 hydrogen

• 1 carbon and 4 hydrogens

• 4 carbons and 1 hydrogen

What atoms are found in CO₂ (carbon dioxide)?

• 2 carbons and 2 oxigens

• 1 carbon and 1 oxigen

• 1 carbon and 2 oxigens

• 2 carbons and 1 oxigen

What atoms are found in H₂O (water)?

• 2 hydrogens and 2 oxigens

• 1 hydrogen and 1 oxigen

• 2 hydrogens and 1 oxigen

• 1 hydrogen and 2 oxigens

What atoms are found in NH₃ (ammonia)?

• 3 nitrogens and 3 hydrogens

• 1 nitrogen and 1 hydrogen

• 1 nitrogen and 3 hydrogens

• 3 nitrogens and 1 hidrogen

Particles are in a very close proximity to each other.

• solid state

• liquid state

• gas state