What are the three main categories of substances discussed in the video?

• Elements, Compounds, and Mixtures

• Solids, Liquids, and Gases

• Metals, Non-metals, and Metalloids

• Acids, Bases, and Salts

Which of the following is a characteristic of an element?

• Made of only one type of atom

• Contains two or more different atoms chemically joined

• Made of different substances not chemically joined

• Particles are not identical

Tags

NGSS.MS-PS1-1

What defines a compound?

• A mixture of different substances

• A substance with particles that are not identical

• A substance made of only one type of atom

• A pure substance with identical particles

Which statement is true about mixtures?

• They are made of only one type of atom

• They contain at least two different substances not chemically joined

• Their particles are identical

• They are pure substances

Identify the substance: All particles are identical and made of only one type of atom.

• Compound

• Solution

• Mixture

• Element

Identify the substance: Particles are identical and made of at least two different elements chemically joined.

• Compound

• Element

• Mixture

• Solution

Tags

NGSS.MS-PS1-1

Which of the following is an example of a compound?

• Water (H2O)

• Helium (He)

• Oxygen gas (O2)

• Iron (Fe)

Tags

NGSS.MS-PS1-1

Identify the substance: Particles are not identical and made of at least two different substances not chemically joined.

• Compound

• Solution

• Element

• Mixture

Which of the following is an example of an element?

• Carbon dioxide (CO2)

• Salt (NaCl)

• Gold (Au)

• Sugar (C12H22O11)

Which of the following is an example of a mixture?

• Sodium chloride (NaCl)

• Carbon monoxide (CO)

• Hydrogen gas (H2)

• Air