Chem Final 2023

Opposite charges will _________ to each other.

The three parts of the atom include a _______, neutron and electon

What is the atomic number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

Look at the image. What is the atomic number for carbon?

• 12.011

• 6

• 7

• 8

What Is The Atomic Number of Iodine?

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

Which of the following is NOT an example of a physical change?

• crumpled paper
• pencil sharpening
• shrunken clothing
• rust

Which of these is a result of a chemical change?

• A mixture
• A solution
• A new substance
• Melting or freezing

The compound H₂SO₄ has how many elements?

• 3
• 4
• 6
• 7

Chose all of the elements that are metals:

• Calcium (Ca)

• Zinc (Zn)

• Arsenic (As)

• Chlorine (Cl)

• Potassium (K)