Molecules and extended structures

What is  $H_2O$  ?

• A chemical formula that shows atomic composition

• A chemical equation that shows a reaction

• A chemical symbol for the periodic table

• A chemical number that shows the atomic mass

Tags

NGSS.MS-PS1-1

What is the difference between butane and isobutane?

• They have different chemical formulas

• They have different atomic masses

• They have different chemical structures

• They have different elements in them

Tags

NGSS.MS-PS1-1

What is the chemical formula for caffeine (pictured)?

• C₄H₂N₁₀O₈

• CHN₂O

• CHNO

• C₈H₁₀N₄O₂

Tags

NGSS.MS-PS1-1

Which of the following is a polymer?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

What is the example in the image?

• The electrons in an atom

• A diatomic structure

• An extended structure (macro molecule)

• A water molecule

Tags

NGSS.MS-PS1-1

Which of the following gases is a molecule?

• Oxygen (O₂)

• Helium (He)

• Hydrogen (H₂)

• Carbon dioxide (CO₂)

Tags

NGSS.MS-PS1-1

How many elements occur in nature?

• 18

• 53

• 92

• 118

Which of the following is NOT a property of a metal?

• shiny

• brittle

• good conductor of heat and electricity

• malleable

Who was Dmitri Mendeleev?

• The scientist who wrote the first periodic table

• The scientist who created the nuclear bomb

• The scientist who discovered atoms

• The scientist who discovered electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is an element?

• Two or more types of atoms chemically combined

• An atom that releases hydrogen ions into water

• The smallest particle a substance can be broken down into and still be the same substance

• A reaction between two substances than produces a new substance

Tags

NGSS.MS-PS1-1