Atom and Periodic Table review

Front

What is atomic mass?

Back

The atomic mass is equal to the total number of protons and neutrons in an atom.

Front

What charge does a lithium atom have after losing 1 electron?

Back

+1

Front

What is the difference between an ion, isotope, and a normal atom?

Back

An ion is an atom that has gained or lost electrons, an isotope is an atom with the same number of protons but a different number of neutrons, and a normal atom has an equal number of protons and electrons.

Front

What is the atomic number of aluminum and what does it represent?

Back

The atomic number of aluminum is 13, which represents the number of protons or electrons in a neutral atom.

Front

What properties do elements on the left side of the Periodic Table have in common?

Back

They conduct heat and electricity.

Front

What is the definition of an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the significance of the atomic number in the periodic table?

Back

The atomic number determines the identity of an element and its position in the periodic table.

Front

How do isotopes of an element differ from each other?

Back

Isotopes of an element differ in the number of neutrons they contain.

Front

What is the role of electrons in determining the chemical properties of an atom?

Back

Electrons, particularly those in the outermost shell, determine how an atom interacts and bonds with other atoms.

Front

What is the general trend of reactivity in the periodic table?

Back

Reactivity tends to increase as you move down a group and decrease as you move across a period from left to right.