S9 Chem review

Why do scientists consider atoms the smallest unit of a material?

• The atom is the smallest thing

• Subatomic particle properties do not match materials

• Subatomic particles do not have any properties

• Atoms are combined together to form molecules

Which of the following is a chemical property of matter?

• Malleability

• Conductivity

• Combustibility

• Viscosity

Which of the following is not found on the cards of typical periodic tables?

• The symbol

• The atomic number

• The atomic density

• The atomic mass

Atoms that belong to the same group have ___ in common

• Atomic number

• Valence electron number

• Atomic size

• Occupied energy shell

Atoms that belong to the same period have ___ in common

• Atomic number

• Valence electron number

• Atomic size

• Occupied energy shell

A column in the modern periodic table is called a

• Group

• Category

• Period

• Family

A row in the modern periodic table is called a

• Group

• Category

• Period

• Family

Ionic compounds are formed by __ electrons

• Exchanging

• Sharing

You notice a material that is brittle and is soluble in a polar solvent. You suspect that it is an

• Elementental compound

• Ionic compound

• Covalent compound

• Multivalent metal

You notice a material that melts at a very high temperature and will conduct electricity if melted. You suspect that it is

• Ionic compound

• Covalent compound