Element Compounds and Reactions

What is an element?

• a substance that CANNOT be broken down into smaller pieces

• a substance that CAN be broken down into smaller pieces

• a mixture of two substances

• a compound of two substances

The rows on the Periodic Table are called what?

• Groups

• Periods

• families

• protons

The columns in a Periodic Table are called what?

• Rows

• Periods

• Groups (or families)

• protons

What is a mixture?

• two or more substances that have been combined chemically

• two or more substances that have been combined physically

• a substance that cannot be broken down anymore; the building blocks of life

What is a compound?

• a substance that cannot be broken down into smaller pieces

• two or more substances that have been physically combined

• two or more substances that have been chemically combined

Which of the following is an example of an element?

• fruit salad

• Helium (He)

• Pizza

• Salt (NaCl)

What is an example of a mixture?

• pizza

• Helium (He)

• Iron (Fe)

• wood

What is NOT an example of a compound?

• Salt (NaCl)

• Electricity

• Sulfuric Acid (H₂SO₄)

• Water (H₂O)

Tags

NGSS.MS-PS1-1