Chemistry A Ess Course Assessment

Front

What is the molar mass of Pb(NO3)2?

Back

331 g/mol

Front

What is concentration in chemistry?

Back

The amount of solute in the solvent.

Front

What happens when KBr is dissolved in water?

Back

Br- ions are attracted to the hydrogen atom of water.

Front

What is a mixture in chemistry?

Back

A combination of two or more substances where each retains its own properties.

Front

What type of bond is formed between nonmetals?

Back

Covalent bond.

Front

Define molar mass.

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

What is the difference between a solute and a solvent?

Back

A solute is the substance that is dissolved, while a solvent is the substance that does the dissolving.

Front

What is the formula for calculating concentration?

Back

Concentration = Amount of solute / Volume of solution.

Front

What is an ionic bond?

Back

A chemical bond formed between two ions with opposite charges.

Front

What is the significance of the periodic table in chemistry?

Back

It organizes elements based on their atomic number, electron configurations, and recurring chemical properties.