Which of the following best describes a metallic bond?

• A shared pair of electrons attracted to both nuclei

• Electrostatic attraction between cations and anions

• Weak bonds between molecules

• A sea of delocalised electrons surrounding a cation lattice

What subatomic particle has a positive charge?

• Proton

• Neutron

• Electron

• Nucleus

Which of the following subatomic particles are not found in the nucleus?

• Proton

• Neutron

• Electron

• Cation

What is the atomic number of an element equal to?

• the number of protons

• the number of neutrons

• the number of protons and neutrons

• the number of neutrons and electrons

An oxygen ion has 8 protons and 10 electrons. What is the charge on an oxygen ion?

• 2+

• Neutral

• 2-

• 1+

Carbon-14 and carbon-12 contain:

• Same number of protons and neutrons

• Same number of protons and different number of neutrons

• Same number of protons and different number of electrons

• Different number of electrons and protons

Tags

NGSS.MS-PS1-1

Which element will have a greater atomic radius?

• Sodium (Na)

• Rubidium (Rb)

• Chlorine (Cl)

• Helium (He)

Tags

NGSS.HS-PS1-1

What type of elements does an ionic bond form between?

• metal and metal

• metal and non-metal

• non-metal and non-metal

• Any type of element can form an ionic bond

Which of the following compounds is an example of a covalent compound?

• CaO

• NaCl

• Mg

• H2O

Tags

NGSS.MS-PS1-1

Elements in the same group have the same number of:

• Protons

• Electrons

• Valence electrons

• Electron shells