Chemistry Midterm Review 1

Front

What type of elements are blue in the periodic table?

Back

Metals are typically represented in blue in the periodic table.

Front

Protons have a ____________ charge, neutrons have a ____________ charge, and electrons have a ____________ charge.

Back

Protons have a positive charge, neutrons have a neutral charge, and electrons have a negative charge.

Front

Which subatomic particles contribute the most to the mass of an atom?

Back

Protons and Neutrons contribute the most to the mass of an atom.

Front

Who was the first to propose that matter consists of indivisible particles called atoms?

Back

Democritus was the first to propose that matter consists of indivisible particles called atoms.

Front

What family of elements is known for being highly reactive and includes lithium and sodium?

Back

Alkali Metals are known for being highly reactive and include elements like lithium and sodium.

Front

What is the charge of an electron?

Back

The charge of an electron is negative.

Front

What are the two main types of elements in the periodic table?

Back

The two main types of elements are metals and nonmetals.

Front

What is the atomic number of an element?

Back

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

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number and properties, helping predict their behavior.