Parts of the atom

What is matter?

• anything that has mass and takes up space

• things like light, baseballs, sound, protons that are moving fast

• Objects that are heavy

• nothing, what's the matter with you?

what is an atom?

• smallest building block of matter

• smallest part of matter with it's own identity

• things that make up chemicals

• a solar system like object that is extremely small

How many elements are there?

• 3

• millions

• about 120

• depends on where in universe you look.

What charge does a proton have?

• positive

• negative

• neutral

There are equal numbers of ___ and ___ in an atom (if it's neutral)

• protons and neutrons

• protons and electrons

• neutrons and electrons

Which subatomic particles contribute the most to the mass of an atom?

• Protons, Neutrons, Electrons
• Protons only
• Protons and Electrons
• Protons and Neutrons

Parts of the atom that are the smallest of the three subatomic particles

• Protons

• Neutrons

• Electrons

How many protons are in Beryllium?

• 4
• 9
• 5
• 2

What is the atomic mass of Copper?

• 63
• 29
• 34
• 92

How many electrons does an Iodine atom have?

• 53
• 126
• 73
• 179