Elements and Compounds Notes

What are pure substances that cannot be broken down chemically called? (Slide 2)

• Compounds

• Mixtures

• Elements

• Solutions

What is each element made up of? (Slide 2)

• Molecules

• Atoms

• Cells

• Particles

What is the term for a substance made of only one type of atom? (Slide 2)

• Mixture

• Compound

• Element

• Solution

What is the chemical symbol for Hydrogen? (Slide 7)

• He

• H

• Hy

• Hg

What do chemical symbols on the Periodic Table represent? (Slide 2)

• Elements

• Compounds

• Mixtures

• Solutions

How are compounds represented? (Slide 4)

• By a chemical symbol

• By a chemical formula

• By a physical state

• By a color code

Do compounds have the same properties as the elements that make them up? (Slide 4)

• Yes, always

• No, they have different properties

• Sometimes

• Only if they are metals

What is a key characteristic of compounds? (Slide 4)

• They are mixtures

• They are pure substances

• They are always gases

• They are always liquids

What is the term for substances that can be broken down chemically? (Slide 4)

• Mixtures

• Compounds

• Solutions

• Elements

Which compound is represented by the formula NaCl? (Slide 5)

• Water

• Salt

• Iron Oxide

• Sugar