Science 6.5

What is the term for a tiny group of two or more atoms that are bonded together tightly ?

• Compound

• Mixture

• Molecules

• Crystal

What do we call a substance composed of more than one type of atom bonded together ?

• Compound

• Mixture

• Molecules

• Crystal

What is the hardest known substance ?

• Steel

• Iron

• Crystal

• Diamond

What geometric shape is formed by sodium and chlorine ?

• Cylinder

• Cube

• Crystal

• Diamond

What is a compound that is composed of individual molecules called ?

• Chemical reaction

• Mixture

• Ionic compound

• Molecular compound

What is a compound composed of charged atoms or group of atoms known as ?

• Chemical reaction

• Mixture

• Ionic compound

• Molecular compound

What is the formula for Water ?

• H2O

• 2HO

• OH2

• 2OH

True or False: A mixture is a substance composed of one or more type of atoms bonded together

• True

• False

  (that's a compound)

True or False: Two or more atoms firmly bound together form a neutron.

• True

• False

  (Molecule)

True or False: Diamond is the hardest of all known substances.

• True

• False