PAX PAX Chemistry and Physical Science

Question 1

What is the atomic number of an element?

Accepted Answer

The number of protons in the nucleus

Answer

The number of neutrons in the nucleus

Answer

The total mass of the atom

Answer

The number of electrons in the outer shell

Question 2

What type of bond is formed when electrons are shared between atoms?

Accepted Answer

Covalent bond

Answer

Ionic bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 3

What is the pH of a neutral solution?

Accepted Answer

7

Answer

0

Answer

5

Answer

14

Question 4

Which state of matter has a definite volume but no definite shape?

Accepted Answer

Liquid

Answer

Solid

Answer

Gas

Answer

Plasma

Question 5

What is the chemical formula for water?

Accepted Answer

H₂O

Answer

HO

Answer

H₂O₂

Answer

OH₂

Question 6

Which subatomic particle has a negative charge?

Accepted Answer

Electron

Answer

Proton

Answer

Neutron

Answer

Nucleus