Semester 1 review 2024

Front

What represents protons on the periodic table?

Back

Atomic Number

Front

Convert 117 cm to dm.

Back

11.7 dm

Front

What is the charge of an ion?

Back

An ion is an atom that has lost or gained one or more electrons, resulting in a net charge.

Front

What is a neutral atom?

Back

A neutral atom has an equal number of protons and electrons, resulting in no overall charge.

Front

Convert 34 m to mm.

Back

34,000 mm

Front

What is the definition of atomic mass?

Back

Atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What is mass number?

Back

Mass number is the total number of protons and neutrons in an atom's nucleus.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How do you determine if an atom is an ion or neutral?

Back

Count the number of protons and electrons; if they are equal, the atom is neutral; if not, it is an ion.

Front

What is the formula to convert centimeters to decimeters?

Back

To convert cm to dm, divide the number of centimeters by 10.