Chemistry Comes Alive

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Chapter 2
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1

What is an element?

Unique substances that cannot be broken down into simpler substances by ordinary chemical bonds.

2

What determines the unique properties of an element?

Atoms of different elements are composed pf different numbers of protons, neutrons, and electrons.

3

What is an isotope?

Different atomic forms of the same element, which vary only in the number of neutrons they have.

4

Radioisotopes

Isotope that exhibits radioactive behavior

5

What is a molecule?

The combination of two or more atoms held together by chemical bonds.

6

What is a compound?

Two or more different kinds of atoms bind together. Example H2O.

7

What is a mixture?

Two or more components physically intermixed.