Unit 1 review

What is the chemical symbol for the element hydrogen

• H
• He
• h
• he

What is the chemical symbol for the element Carbon

• ca
• co2
• C
• Cd

What is the chemical symbol for the element Chlorine

• C
• Cl
• cl
• Ch

What is the chemical symbol for the element Calcium

• C
• Ca
• Cl
• CL

What is the chemical symbol for the element Potassium

• K
• P
• Po
• Pt

Fe

• Lead

• Iron

• Gold

• Lead

How many elements are in H₂O?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

A one or two letter abbreviation used to represent an element is called a(n) ________

• chemical symbol

• chemical formula

Carbon (C) is considered an element while Carbon Dioxide (CO₂) is considered a compound. That is because Carbon Dioxide is -

• a gas

• made of two elements

• given off by plants

• useful to us

Tags

NGSS.MS-PS1-1

How many Capital or Uppercase letters can one element have?

• 5

• 1

• 3

• 2