Warm up 12/05/2024 Exploring Matter: Mixtures and Substances

What is a pure substance?

• A mixture of different elements and compounds

• A material made up of only one type of particle

• A combination of two or more substances

• A solution with uniform composition

Tags

NGSS.MS-PS1-4

Which of the following is an example of a homogeneous mixture?

• Sand and water

• Salt dissolved in water

• Oil and water

• Iron filings and sulfur

How can you distinguish between a homogeneous and a heterogeneous mixture?

• By checking if the mixture is solid or liquid

• By observing if the components are evenly distributed

• By measuring the temperature of the mixture

• By determining the color of the mixture

Which method would you use to separate a heterogeneous mixture of sand and iron filings?

• Filtration

• Evaporation

• Magnetism

• Distillation

What property of a solution makes it a homogeneous mixture?

• It has a fixed shape

• It has a uniform composition throughout

• It can be separated by physical means

• It contains visible particles