What's an atom?

What's an atom?

by Karly Carazo

Multiple Choice

What is the smallest particle that makes up all matter?

• Atom

• Molecule

• Compound

• Electron

Parts of an Atom

​1) Protons- Positively Charged Particles

​2) Neutrons- No charge (Neutral)

​3) Electrons- Negatively Charged Particles

Multiple Choice

Which part of an atom has a positive charge?

• Proton

• Electron

• Neutron

Multiple Choice

Which part of an atom has a negative charge?

• Proton

• Electron

• Neutron

​Let's try to label!

​Blue=

​Red=

​Gray=

​The center of an atom is the NUCLEUS. Here is where you find protons and neutrons. They are more massive than electrons. Electrons are found swirling around the nucleus in energy shells.

Multiple Choice

What two parts of an atom have the most mass?

• Protons and Electrons

• Protons and Neutrons

• Neutrons and Electrons

• Electrons

​Are there different types of atoms?

• ​YES!!

• ​Some atoms have different numbers of protons, neutrons and electrons!

​Elements

​Each element has a different number of protons and electrons!

​

​Important: Most of the time the number of protons and electrons in an atom are equal to make a neutral atom.

​So what's an element?

• ​An element is a pure substance made of only one type of atom

​

• ​For example, Gold is an element and it is only made of gold atoms.

​

• ​Each gold atom has 79 protons and 79 electrons.

Open Ended

What do you think is different about each element?

​Now go back to INB Slide 6-8 and work on your drawings :)