Atomic Zoom-In

There are currently __________ types of atoms in the universe

• 0ver 200

• 81

• 118

• 1000

Which of the following substances is made of carbon atoms packed together tightly?

• Diamond

• Cubic zirconia

• Graphite

• Salt crystals

What is the main reason diamonds and cubic zirconia have different properties?

• They are made of different types of atoms

• They are both made of carbon atoms

• They have the same melting point

• They are both equally hard

Who was the first to propose the idea that all matter is made of tiny pieces called atoms?

• John Dalton

• Isaac Newton

• Albert Einstein

• Niels Bohr

What is the chemical formula for cubic zirconia?

• ZrO2

• C

• C6H12O2

• C5H10O2

According to paragraph 3, substances have different properties because they are made of different type and number of atoms

• TRUE

• FALSE