Physical Science Quiz

How is the 26400 written in scientific notation?

• 2.64 x 10^4
• 26.4 x 10^3
• 264 x 10^2
• 2.64 x 10^3

Write 2.7 x 10-³ in standard notation?

Cooking an egg, burning wood, and metal rusting are all examples of

• boiling water
• mixing ingredients
• blowing air
• chemical reactions

Solids, liquids, and gasses are all examples of

• species of animals
• states of matter
• types of energy
• colors of the rainbow

What is the difference between an Exothermic reaction and an Endothermic reaction?

• Exothermic reactions release cold energy, while endothermic reactions absorb heat energy.
• Exothermic reactions absorb heat energy, while endothermic reactions release heat energy.
• Exothermic reactions release heat energy, while endothermic reactions absorb heat energy.
• Exothermic reactions release light energy, while endothermic reactions absorb heat energy.

List and draw a diagram of the particles in each of the three states of matter:

What does the atomic number show?

• Number of molecules in an atom's nucleus
• Number of neutrons in an atom's nucleus
• Number of protons in an atom's nucleus and the number of electrons orbiting

• Number of electrons in an atom's nucleus

A group is horizontal or vertical?

• Only horizontal
• Diagonal
• Both
• Only vertical

How many VALENCE electrons are in Sulfur?

• 2
• 8
• 4
• 6

How many electrons are in Chlorine?