Atomic Structure & History WaGslide notes

Take NOTES!

Turn to page 13 of your packet

Fill in the guided reading and/or add information as needed to help you AND go back if you're not sure instead of guessing!

Draw

Write 200,000,000,000,000,000,000,000 in scientific notation.

Multiple Choice

What is the smallest particle into which an element can be divided and still be the same substance?

• Molecule

• Atom

• Compound

• Element

Multiple Choice

What do atoms make up?

• Compounds

• Molecules

• Elements

• Mixtures

Multiple Choice

What do elements combine to make?

• Atoms

• Compounds

• Mixtures

• Solutions

Multiple Choice

Why is water considered a compound?

• It is made of hydrogen and oxygen

• It is a liquid

• It is found in nature

• It is essential for life

Multiple Choice

Can you list two compounds?

• Water and Salt

• Oxygen and Nitrogen

• Hydrogen and Helium

• Carbon and Iron

Multiple Choice

Which subatomic particle is positively charged and located inside the nucleus?

• Electron

• Neutron

• Proton

• Photon

Multiple Choice

What charge do neutrons have?

• Positive

• Negative

• Neutral

• Variable

Multiple Choice

Where are electrons located in an atom?

• Inside the nucleus

• Outside the nucleus

• In the nucleus

• Between protons and neutrons

Multiple Choice

Who discovered that electricity passing through a gas caused the gas to give off particles too small to be atoms?

• Albert Einstein

• J. J. Thomson

• Isaac Newton

• Niels Bohr

Multiple Choice

What did J. J. Thomson's discovery suggest about the size of the particles compared to atoms?

• They were larger than atoms

• They were the same size as atoms

• They were too small to be atoms

• They were the size of molecules

Multiple Choice

What was the nature of the particles discovered by J. J. Thomson?

• Positive

• Neutral

• Negative

• Magnetic

Fill in the Blanks

The gold foil experiment proved that most of an atom is ___________ ________.

Draw

Place the star on the nucleus.

Multiple Select

Which particle(s) make up the mass of the atom?

• protons

• Neutrons

• electrons

• quarks

Multiple Choice

What does the atomic number of an element represent?

• Number of electrons

• Number of neutrons

• Number of protons

• Number of atoms

Fill in the Blanks

What is the rounded mass number of oxygen?

Open Ended

• How many protons 

• How many electrons 

• How many neutrons?

• HINT: To find neutrons just subtract protons from rounded mass number.  19-9=?

Fill in the Blanks

How many protons? _____

How many neutrons? _______

How many electrons? ___________

Draw

Draw a picture of a lithium atom.  Be sure to label the protons, neutrons and electrons.