Matter and Its Interactions Quiz B

What does the atomic number of an element represent?

• The number of neutrons in the nucleus

• The number of protons in the nucleus

• The number of electrons in the outer shell

• The average atomic mass

Which group on the periodic table contains the noble gases?

• Group 1

• Group 2

• Group 17

• Group 18

What is the average atomic mass of carbon as shown on the periodic table?

• 6

• 12.01

• 14

• 16

Which of the following elements is classified as a metalloid?

• Sodium (Na)

• Silicon (Si)

• Oxygen (O)

• Gold (Au)

How many electrons does a neutral atom of fluorine have?

• 7

• 9

• 17

• 19

Which of the following is a property of metals?

• Brittle

• Poor conductor of electricity

• Shiny and malleable

• Dull and non-malleable

Which element is in period 3, group 1 of the periodic table?

• Sodium (Na)

• Potassium (K)

• Magnesium (Mg)

• Lithium (Li)

Which of the following elements is most likely to form a covalent bond?

• Sodium (Na) and Chlorine (Cl)

• Hydrogen (H) and Oxygen (O)

• Potassium (K) and Bromine (Br)

• Magnesium (Mg) and Oxygen (O)

How many valence electrons does an atom of oxygen have?

• 2

• 4

• 6

• 8

Which of the following elements is most reactive among the alkali metals?

• Lithium (Li)

• Sodium (Na)

• Potassium (K)

• Cesium (Cs)