ATOMS page 4, Section 3 Atoms- the smallest unit of life

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Presentation transcript:

ATOMS page 4, Section 3 Atoms- the smallest unit of life Everything in the universe, living and non-living, is made up of atoms Atoms join together to form molecules that make up most of existence MOLECULE- group of two or more atoms

Atoms are made up of 3 SUBATOMIC particles: Protons- housed in nucleus, positive charge Neutrons- found in nucleus, no charge (neutral), number of neutrons can affect atoms mass

Electrons- found outside of the nucleus, negative charge, VERY small compared to neutrons and protons ( in fact…it would take about 2,000 electrons to equal the mass of one proton) Electrons “zoom” around the nucleus in the Electron Cloud

Page 4 Continued On the bottom of your page 4, draw and label an atom model. Be sure to include the 3 subatomic particles, their charge, and their location within the atom.