This video tutorial covers the basics of matter, including elements, compounds, and mixtures. It explains elements as pure substances found on the periodic table, compounds as chemically combined elements, and mixtures as physically combined substances. The video also discusses solutions, solubility, alloys, and colloids, providing examples and visual aids to enhance understanding.

What is the most basic building block of matter?

• Compound

• Mixture

• Element

• Molecule

Which of the following is a pure substance?

• Orange juice

• Cheeseburger

• Water

• Salad

What happens when two elements chemically combine?

• They form a solution

• They remain separate

• They form a compound

• They form a mixture

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of the following is an example of a compound?

• Oxygen gas

• Table salt

• Sand

• Salad

Tags

NGSS.MS-PS1-1

What is the main difference between a mixture and a compound?

• Mixtures are chemically combined

• Compounds can be separated physically

• Compounds are not pure substances

• Mixtures can be separated physically

Which of the following is a homogeneous mixture?

• Salt water

• Oil and vinegar

• Chocolate chip cookies

• Pizza

In a solution, what is the substance that gets dissolved called?

• Mixture

• Solute

• Solvent

• Compound

What is a concentrated solution?

• A solution with equal amounts of solute and solvent

• A solution with a large amount of solute

• A solution with a small amount of solute

• A solution with no solute

What is an alloy?

• A mixture of two or more metals

• A non-metallic mixture

• A pure metal

• A compound of metals

Which of the following is an example of a colloid?

• Table salt

• Fog

• Brass

• Salt water