Question

select the true statements.
sodium and chlorine are both solids at room temperature.
a compound has the same properties as its component atoms.
when atoms of two different elements bond, they form a new compound with unique properties.
in table salt, sodium and chlorine are held together by chemical bonds.

Explanation:

• Sodium is a solid at room temperature, but chlorine is a gas. So the first statement is false.
• A compound has different properties from its component atoms. For example, sodium is a reactive metal and chlorine is a toxic gas, but sodium chloride (table salt) is harmless. So the second statement is false.
• When atoms of two different elements bond, they form a new compound with unique properties. This is a fundamental concept in chemistry.
• In table salt (\(NaCl\)), sodium and chlorine are held together by ionic bonds (a type of chemical bond).

Answer:

• C. When atoms of two different elements bond, they form a new compound with unique properties.
• D. In table salt, sodium and chlorine are held together by chemical bonds.