Fall Semester Exam Review 2024

Front

What is the mass number defined as?

Back

The mass number is defined as the number of protons and neutrons in an atom.

Front

Which pair of elements is most likely to have similar properties?

Back

Osmium and Hassium are most likely to have similar properties.

Front

What is the % of sodium in Na2SO4?

Back

The % of sodium in Na2SO4 is 32.38%.

Front

This could be the dot diagram of which element?

Back

The dot diagram could represent Oxygen (O).

Front

Halogens are in group #___?

Back

Halogens are in group #17.

Front

What is the definition of an element?

Back

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

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What are isotopes?

Back

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What are the main characteristics of metals?

Back

Metals are typically shiny, good conductors of heat and electricity, malleable, and ductile.