Atoms, Elements, and Atomic Structure

Which of these is the smallest?

• Atoms

• Matter

• Elements

Helium has an atomic number of two because it has two ___________.

• protons

• neutrons

• electrons

• atoms

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NGSS.MS-PS1-1

The atomic mass is equal to which two items listed below? PICK TWO!

• Protons

• Neutrons

• Electrons

• Atom

How are elements organized in the periodic table?

• By Density and Date of Discovery

• By Atomic Number and Properties

• By Atomic Mass and Melting Point

How do atoms of copper differ from atoms of aluminum?

• They are not pure substances.

• They have different chemical properties.

• They are made up of more than one type of particle.

Tags

NGSS.MS-PS1-1

Label the parts of the atom.

• Electron(a), Neutron(b), Proton(c)

• Proton(a), Electron(b), Neutron(c)

• Neutron(a), Proton(b), Electron(c)

• Electron(a), Proton(b), Neutron(c)

Tags

NGSS.MS-PS1-1

Which substance is one that cannot be separated or broken down into simpler substances by chemical means?

• Gold Wire

• Candle Wax

• Water Vapor (H2O)

Which statement correctly describes atoms?

• Atoms combine to make all the substances on Earth.

• Atoms of all substances have the same chemical properties.

• Atoms are easily destroyed when matter is cooled or heated.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Think about a wooden chair and a balloon. What do these two objects always have in common?

• Both are made of atoms.

• Both have the same physical properties.

• Both are made of the same kind of atom.

Tags

NGSS.MS-PS1-1

Below is a portion of the periodic table. Which two elements are most likely to have similar physical properties?

• copper and zinc

• copper and silver