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8

# of planets in the solar system

Mercury

Planet closest to the sun

Neptune

Planet farthest from the Sun

Saturn

Planet with prominent rings

No

Do all planets have moons?

Shortest

Mercury has the ______ year

Jupiter

Largest planet

Venus

Hottest planet

Rock and metal

What are asteroids made of

Sun

Star closest to us

Protons, neutrons, electrons

3 basic components of an atom

protons

An element number is determend by the number of these

protons, neutrons

nucleus consists of...

positive

When an atom loses one or more electrons it will have this charge

Size and mass

Protons and neutrons have the same...

protons, electrons

two particles that are attracted to each other

Electron Cloud

Where electrons are found in an atom

100

Number of known elements

Atomic number

how elements are arranged in the periodic table

Mendeleev

Scientist who came up with the periodic table

Periods

rows in the periodic table

Groups

Columns in the periodic table

Gases

Group on the right side of the periodic table

negative

When an atom gains one or more electrons it will have this charge

ion

atom that gains or loses one or more electrons

Complete

In both ionic and covalent bonds, atoms are left with ____________ outer shells

metal and nonmetal

Ionic bond forms between these two

Share

In covalent bonds, elements _______ one or more electrons

Covalent bond

forms between two nonmetals

compound

pure substance containing two or more elements that are chemically bonded

Chemical Formula

combination of chemical symbols and numbers that shows which elements are present in a compound

comet

A ball of frozen dust and rock that orbits the sun and has a tail that glows

meteor

A meteoroid that burns up in Earth's atmosphere.

meteorite

a meteoroid that does not completely burn up in the atmosphere and strikes the surface of a moon or planet

asteroid

any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)

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