Understanding Elements and Compounds

What is an element?

• An element is a mixture of different atoms.

• An element is a type of molecule made of two or more atoms.

• An element can be broken down into simpler substances.

• An element is a pure substance made of only one type of atom.

What is a compound?

• A compound is a single element.

• A compound is a type of chemical reaction.

• A compound is a substance made of two or more elements chemically combined.

• A compound is a mixture of different substances.

How do elements differ from compounds?

• Elements are always solid; compounds can be gases.

• Elements can be made of multiple types of atoms; compounds cannot.

• Elements consist of one type of atom; compounds consist of two or more different types of atoms.

• Elements are formed through chemical reactions; compounds are not.

Can a compound be broken down into simpler substances?

• Yes, a compound can be broken down into simpler substances.

• Compounds are already in their simplest form.

• No, a compound cannot be broken down.

• Only elements can be broken down into compounds.

Is water an element or a compound?

• solution

• compound

• element

• mixture

What are the building blocks of matter?

• Molecules

• Cells

• Atoms

• Electrons

Give an example of a chemical element.

• Oxygen

• Carbon Dioxide

• Water

• Hydrogen

What is the smallest unit of a compound called?

• Element

• Ion

• Atom

• Molecule

Are all compounds made of the same elements?

• All compounds are made of the same elements.

• Compounds can only be made of two elements.

• No, not all compounds are made of the same elements.

• Every compound consists of identical elements.

What is the chemical formula for table salt?

• KCl

• MgCl2

• NaCl

• CaCl2