2024 Semester 1 - FINAL (HONORS)

Front

In a covalent bond, valence electrons are _____________.

Back

shared

Front

The only thing that changes in an isotope of an element is the ____________.

Back

number of neutrons

Front

Which of these is an alkaline earth metal?

Back

Magnesium (Mg)

Front

What is the name of the process where substances undergo a transformation to create different substances?

Back

chemical reaction

Front

Which is NOT a clue that could indicate a chemical change has occurred?

Back

Change in shape and size

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that are involved in forming bonds.

Front

Define an isotope.

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

List two properties of alkaline earth metals.

Back

1. They are shiny and silvery-white. 2. They are reactive, especially with water.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Front

Name a sign of a chemical change.

Back

Change in color, release of gas, or temperature change.