3.3 Structure & Properties of Materials

Which of the following is a pure substance that cannot be separated into simpler substances by chemical or physical means?

• Element

• Compound

• Mixture

• Chemical

Answer explanation

Element: Contains one type of substance only, simplest subst, can’t be broken down

Compound: Diff. elements chemically combined

Mixture: Diff. substance not chemically combined

This picture represents which of the following?

• element
• compound
• mixture of elements
• mixture of compounds

Tags

NGSS.MS-PS1-1

What is H₂SO₄ made up of?

• 2 hydrogen, 1 sulfur, 4 oxygen

• 1 hydrogen, 2 sulfur, 4 oxygen

• 2 hydrogen & 4 sodium

• 1 hydrogen & 6 sodium

Is sugar (C₁₂H₂₂O₁₁) an element or a compound?

• Element
• Compound

Tags

NGSS.MS-PS1-1

Classify the picture with the correct label.

• Element
• Compound
• Mixture of Elements
• Mixture of Compounds

Tags

NGSS.MS-PS1-1

Classify the picture with the correct label.

• Element
• Compound
• Mixture of Elements & Compounds
• Mixture of Compounds

Tags

NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Which of the following is not a compound?

• HCl

• Cl₂

• NaCl

• CO₂

Answer explanation

Cl2 contains 2 chlorine atoms. Hence it is an element

When electricity passes through water, hydrogen and oxygen are produced. Which table correctly labels the compounds and elements involved in the process?

• Water-->Compound

  Hydrogen-->Compound

  Oxygen--->Element

• Water-->Compound

  Hydrogen--->Element

  Oxygen--->Compound

• Water--->Compound

  Hydrogen--->Element

  Oxygen--->Element

Tags

NGSS.MS-PS1-1

This picture is a model of a...

• element

• compound

• mixture of compounds

• mixture of elements