Chemistry--Final Exam Review

Front

What are the coefficients that will balance the skeleton equation: AlCl3 + NaOH → Al(OH)3 + NaCl?

Back

1,3,1,3

Front

What is the electron configuration for an element in group 17?

Back

[Ar]4s²4d¹⁰4p⁵, [Kr]5s²4d¹⁰5p⁵, [Xe]5s²5d¹⁰5p⁵ (All of the above) are valid configurations.

Front

What is incorrect about this orbital diagram?

Back

In the 2p box there should only be 1 electron in the first 2p box and one in the 2nd 2p box.

Front

What is the activation energy?

Back

75 kJ

Front

What best describes the nucleus of an aluminum atom?

Back

It has a charge of +13 and is surrounded by a total of 13 electrons.

Front

Define activation energy in a chemical reaction.

Back

The minimum energy required for a chemical reaction to occur.

Front

What is the octet rule?

Back

Atoms tend to gain, lose, or share electrons to achieve a full outer shell of 8 electrons.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is a catalyst?

Back

A substance that increases the rate of a chemical reaction without being consumed.

Front

What is the significance of the periodic table?

Back

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