Atoms

Match the following

Element - (a)  

Atom - (b)  

Protons - ​ (c)  

Neutrons - ​ (d)  

Electrons - ​ (e)  

• Element

• Atom

• matter that is composed of 1 type of atom
• smallest piece of matter; has prop. of element
• Positive Charge  +
• Neutrons or no charge
• Negative charge

located in center of atom

consists of protons and neutrons;

electrons surround the nucleus

(current) model which shows electrons

travelling in specific energy levels around a nucleus; electrons

closest to nucleus have low energy, electrons farther away

have high energy.

Electron Cloud is also known as the Quantum Model

• True

• False

Match the following electrons to their energy levels

• 2

• 3

• 8

• 2

• 32

• 4

• 18

• 1

Tags

NGSS.HS-PS1-1

Last energy level can only hold max of 8 electrons; H and He are exceptions.

• True

• False

Tags

NGSS.HS-PS1-1

Smaller particles of matter called ​ (a)   exist but scientist

still consider ​ (b)   the basic building blocks of matter.

• quarks
• atoms

Tags

NGSS.MS-PS1-1

Match the following

• #of protons in atom; identifies element

• Quark

• Weighted average mass of isotopes

• Atomic Mass

• Atoms of same element, have diff # neut

• Atomic Number

• tiny particles make up protons & neut; 6

• Average Atomic Mass

• mostly protons & neutrons in nucleus; #

• Isotopes

Different isotopes have SAME properties.

• True

• False

* If you needed to find # of neutrons of an atom:

# of ​ (a)   = ​ (b)   number – ​ (c)   number

• Neutrons
• mass
• atomic