Chemistry MP1 4 Week Practice

Front

What is an isotope?

Back

An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons.

Front

What determines the atomic number of an element?

Back

The atomic number of an element is determined by the number of protons in its nucleus.

Front

How many electrons does a neutral atom of sulfur have?

Back

A neutral atom of sulfur has 16 electrons, equal to its atomic number.

Front

What lab equipment is best for holding and heating small solid substances?

Back

A crucible is best for holding and heating small solid substances.

Front

How do you calculate the average atomic mass of an element with multiple isotopes?

Back

The average atomic mass is calculated by taking the weighted average of the masses of its isotopes based on their relative abundances.

Front

What is the mass number of an atom?

Back

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

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while mass number is the total count of protons and neutrons in a specific isotope.

Front

What is a neutral atom?

Back

A neutral atom is one where the number of protons equals the number of electrons, resulting in no overall charge.

Front

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

Back

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

Front

What is a chemical element?

Back

A chemical element is a pure substance that cannot be broken down into simpler substances by chemical means.