Periodic Trends

What defines an element in terms of atomic structure?

• The number of electrons

• The number of protons

• The number of neutrons

• The atomic mass

What is the periodic table arranged by?

• Increasing atomic mass

• Increasing atomic number

• Decreasing atomic number

• Decreasing atomic mass

What forms when non-metal atoms share their outer electrons?

• Ionic compounds

• Metallic bonds

• Covalent compounds

• Hydrogen bonds

Which of the following is a sub-atomic particle?

• Molecule

• Proton

• Compound

• Element

What is a covalent radius a measure of?

• The size of an atom

• The charge of an atom

• The mass of an atom

• The color of an atom

What happens to ionisation energy trends across periods and down groups?

• They remain constant

• They increase across periods and decrease down groups

• They decrease across periods and increase down groups

• They fluctuate randomly

What is electronegativity a measure of?

• The mass of an atom

• The attraction an atom has for the electrons of a bond

• The size of an atom

• The color of an atom

What can cause a particle to be known as an ion?

• Balance in the number of protons and electrons

• Imbalance in the number of protons and electrons

• Equal number of neutrons and electrons

• More neutrons than protons

What do covalent molecular compounds typically have?

• High melting and boiling points

• Low melting and boiling points

• No melting and boiling points

• Variable melting and boiling points

Elements in the same group in the periodic table have the same:

• number of occupied energy shells.

• density.

• number of outer electrons.

• number of protons.