Flocabulary - Atoms & Elements

What is the smallest unit of matter?

• Molecule

• Atom

• Proton

• Electron

What is the core of an atom called?

• Electron

• Neutron

• Nucleus

• Proton

What charge do electrons have?

• Positive

• Negative

• Neutral

• No charge

What do you call a group of atoms bonded together?

• Element

• Molecule

• Proton

• Neutron

What is a pure substance made of only one type of atom called?

• Compound

• Mixture

• Element

• Solution

Which of the following is a metal?

• Oxygen

• Hydrogen

• Iron

• Helium

Who organized the periodic table?

• Albert Einstein

• Dmitri Mendeleev

• Isaac Newton

• Marie Curie

What determines the order of elements in the periodic table?

• Atomic mass

• Number of electrons

• Number of protons

• Number of neutrons

What is atomic mass?

• Number of electrons

• Number of protons and neutrons

• Number of protons

• Number of neutrons

What is each horizontal row in the periodic table called?

• Group

• Period

• Column

• Section