24-25 Midterm Exam Review Units 3 & 4

Front

What is the atomic number of Beryllium (Be)?

Back

4

Front

How many valence electrons does Beryllium (Be) have?

Back

2

Front

What is the electron configuration of Beryllium (Be)?

Back

1s² 2s²

Front

What group does Beryllium (Be) belong to in the periodic table?

Back

Group 2 (Alkaline Earth Metals)

Front

What is the definition of a period in the periodic table?

Back

A horizontal row of elements in the periodic table.

Front

What is the definition of a group in the periodic table?

Back

A vertical column of elements in the periodic table.

Front

What is the charge of an ion that has more electrons than protons?

Back

Negatively charged ion (anion)

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the definition of a neutral atom?

Back

An atom with an equal number of protons and electrons.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals.