Chemistry Pretest Quiz

What is the atomic number of an element that has 6 protons and 6 neutrons?

• 24

• 12

• 6

• 18

How many electrons can the first energy level hold?

• 2

• 5

• 3

• 10

What type of bond is formed when electrons are shared between atoms?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

What is the chemical formula for sodium chloride?

• C6H12O6

• H2O

• NaCl

• CO2

In a chemical reaction, what are the reactants?

• Products of a chemical reaction

• Substances present at the end of a chemical reaction

• Elements that are not involved in the chemical reaction

• Substances present at the beginning of a chemical reaction

What is the product of the reaction between hydrochloric acid and sodium hydroxide?

• Hydrogen gas and sodium hydroxide

• Oxygen gas and hydrochloric acid

• Carbon dioxide and sodium chloride

• Water and sodium chloride

What is the pH of a neutral solution?

• pH = 3

• pH = 7

• pH = 5

• pH = 10

What is the mass of an atom of sodium?

• 11

• 22.989

• 12

• 33.989

What trend does atomic radius follow as you move from left to right across a period in the periodic table?

• Decreases

• Increases

• Remains constant

• Fluctuates

What trend does electronegativity follow as you move down a group in the periodic table?

• Remains constant

• Increases

• Decreases

• Fluctuates