The Atom Lesson

Screen 4
Who is Niels Bohr?

• A scientist who discovered gravity.
• A scientist who discovered electricity
• A scientist who came of with the atom model similar to today.
• A scientist who discovered force and motion laws.

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NGSS.MS-PS1-1

Screen 5
What subatomic particle in an atom  has a negative charge?

• proton
• neutron
• electron
• nucleus

Screen 6
What is the difference between atomic number and mass number?

• Atomic number is the electrons and mass is neutrons.
• Atomic number is the number of protons and the atomic mass is the number of protons plus neutrons.
• Atomic number is the number of neutrons and the atomic mass is the number of electrons.
• Atomic number is the number of protons and the atomic mass is the number of electrons.

Screen 6
Which part of an atom is mostly empty space?

• Electron clouds are made up of mostly empty space
• The nucleus is made of mostly empty space.
• Each proton is made of mostly empty space.
• Neutrons are mostly made of empty space.

Screen 7
Which subatomic particles in an atom have opposite charges?

• An electron has a positive charge and neutron has a negative charge.
• An electron has a negative charge and a proton has a positive charge.
• An electron has a positve charge and a proton has a negative charge.
• A neutron has a negative charge and a proton has a positive charge.

Screen 8
What does the electron cloud in an atomic model represent? 

• Most likely places within the atom that neutrons are found.
• Most likely place where protons are found.
• Most likely places within the atom that the electrons are going to be found.
• Most likely places with the atom that the neutrons and protons are to be found.

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 Screen 9 What would be the atomic number of an atom with 11 protons and 12 neutrons?

• an atomic number of 23.
• an atomic number of 12
• an atomic number of `3
• an atomic number of 11.

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NGSS.MS-PS1-1

 Scree 9 What would be the atomic number of an atom with 11 protons and 12 neutrons?

• an atomic number of 23.
• an atomic number of 12
• an atomic number of `3
• an atomic number of 11.

Tags

NGSS.MS-PS1-1

Screen 10  What are the three subatomic particles that we've talked about in this lesson that make up an atom?

• protons and neutrons
• neutrons and electrons and nucleus
• protons and electrons
• protons, neutrons and electrons

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Screen 10 Which particles determine the atomic number of an atom? Which particles determines the atom's mass number?

• The atomic number is the number of protons.  The atomic mass is protons plus neutrons.
• The atomic number is the number of electrons.  The atomic mass is the electrons and neutrons.
• The atomic number is the number of neutrons.  The atomic mass is protons and electrons.
• The atomic number is the number of electrons. The atomic mass is neutrons and protons.