Atomic Structure

Anything that has mass and takes up space.

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NGSS.MS-PS1-4

The mass of a single atom.

A table that lists all of the known elements and groups them into columns by important shared properties.

What is an atom?

• An atom is a large particle made of protons and neutrons.

• An atom is the smallest unit of matter that retains the properties of an element.

• An atom is a type of molecule.

• An atom is a form of energy that can be harnessed.

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NGSS.MS-PS1-1

What is an atom made up of ?

• Atoms are made of quarks and leptons

• Atoms are made of molecules

• Protons, neutrons, and electrons

• Atoms consist of only protons

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NGSS.MS-PS1-1

What type of charge does a neutron have ?

• A neutron has a negative charge.

• A neutron has no charge. (it is neutral)

• A neutron has a variable charge.

• A neutron has a positive charge.

If atoms are made up of proton, neutrons and electrons, where are they located in the atom?

• Protons are in the electron cloud; neutrons are in the nucleus.

• Protons and neutrons are in the nucleus; electrons orbit around the nucleus.

• Electrons are in the nucleus; protons and neutrons orbit around it.

• Neutrons and electrons are in the nucleus; protons orbit around it.

Tags

NGSS.MS-PS1-1

What does the atomic number of an element represent?

• The number of protons in the nucleus

• The number of neutrons in the nucleus

• The total number of protons and neutrons in the nucleus

• The total number of protons and electrons in an atom

Which subatomic particle is not found in the nucleus of an atom?

• Proton

• Neutron

• Electron

• All of the above are found in the nucleus

How can you determine the number of neutrons in an atom if you know its atomic number and mass number?

• Subtract the atomic number from the mass number

• Add the atomic number to the mass number

• Multiply the atomic number by the mass number

• Divide the mass number by the atomic number