Exploring Atoms and Molecules Quiz

Which of the following best describes a compound?

• A substance made of only one type of atom

• A substance made of two or more different types of atoms chemically bonded together

• A mixture of different elements not chemically bonded

• A single atom

• Two hydrogen atoms and one oxygen atom bonded together

• One hydrogen atom and two oxygen atoms bonded together

• Two hydrogen atoms and two oxygen atoms bonded together

• One hydrogen atom and one oxygen atom bonded together

Which of the following is a correct symbol for the element carbon?

• Ca

• C

• Co

• Cr

What is the difference between a mixture and a compound?

• Mixtures are chemically bonded, compounds are not

• Compounds are chemically bonded, mixtures are not

• Both are chemically bonded

• Both are not chemically bonded

Which of the following is a mixture?

• Air

What does a 2D model of a molecule show?

• The three-dimensional arrangement of atoms

• The arrangement of atoms on a flat surface

• The mass of the molecule

• The temperature of the molecule

Which of the following is a correct chemical formula for carbon dioxide?

Which of the following is an element?

• Water

• Oxygen

• Carbon dioxide

• Salt

What information can you find on the periodic table?

• The chemical formulas of compounds

• The symbols and names of elements

• The melting points of mixtures

• The density of all substances

Which of the following is a 3D model used to represent?

• The mass of an atom

• The three-dimensional arrangement of atoms in a molecule

• The temperature of a substance

• The colour of a compound