Chemistry Semester 1 Post Test

Front

What color indicates the nonmetals?

Back

Red

Front

According to Bohr's model, what is the shape of the orbits in which electrons move around the nucleus?

Back

Circular

Front

Covalent bonds are between...

Back

Non-metal and Non-metal

Front

How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?

Back

1.07 mol

Front

Which weighs more? 1 mole of lithium, 1 mole of carbon, 1 mole of sodium, or 1 mole of silicon?

Back

1 mole of silicon

Front

What is the definition of a mole in chemistry?

Back

A mole is a unit that measures the amount of substance, defined as exactly 6.022 x 10^23 particles.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

Front

What is the principle behind the periodic table?

Back

Elements are arranged by increasing atomic number and grouped by similar chemical properties.

Front

What is molarity?

Back

Molarity is a measure of concentration, defined as the number of moles of solute per liter of solution.

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction.