Quiz on Elements and Compounds

What is an element made up of?

• Multiple types of atoms

• One type of atom only

• Molecules

• Compounds

What is the definition of an element?

• A substance made of two or more types of atoms

• A pure substance made of only one type of atom

• A mixture of different substances

• A chemical reaction

Which of the following is NOT one of the first 10 elements in the periodic table?

• Hydrogen

• Helium

• Sodium

• Neon

What is a compound?

• A mixture of elements

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

• A single type of atom

• A physical change

How do elements and compounds differ?

• Elements are mixtures, compounds are pure substances

• Elements are pure substances, compounds are mixtures

• Elements are made of one type of atom, compounds are made of two or more types of atoms

• Elements are made of molecules, compounds are made of atoms

What is a physical change?

• A change that alters the chemical composition

• A change that affects the form but not the chemical composition

• A change that creates a new substance

• A change that involves a chemical reaction

What is a chemical change?

• A change that affects only the physical state

• A change that involves a chemical reaction and creates a new substance

• A change that does not alter the chemical composition

• A change that is reversible

What occurs during a chemical reaction?

• Atoms are rearranged to form new substances

• Atoms are destroyed

• Atoms are created

• Atoms remain unchanged

What is the difference between reactants and products in a chemical reaction?

• Reactants are the substances formed, products are the starting materials

• Reactants are the starting materials, products are the substances formed

• Reactants and products are the same

• Reactants are always gases, products are always solids

What is a mixture?

• A pure substance made of one type of atom

• A combination of two or more substances that are not chemically bonded

• A chemical compound

• A single element