Mixtures and Solutions

In a chemistry lesson, Ava, Liam, and Sophia are discussing the characteristics of mixtures. Which statement accurately describes mixtures based on their discussion?

• A combination of two or more substances where each substance maintains its individual properties

• A combination of substances that results in a new substance with distinct properties

Answer explanation

In the discussion, a mixture is defined as a combination of two or more substances that maintain their individual properties. This means that even when the substances are combined, they do not chemically react or change their original properties. Each substance in the mixture remains distinct.

On their science expedition, Ava, Zoe, and James discovered four materials: Salt, Soil, Lemon Juice, and Water. Which of these is NOT a solution?

• Salt

• Soil

Answer explanation

In the question, Ava, Zoe, and James encounter four items. A solution is a homogeneous mixture of two or more substances. Among the given options, cereal is not a solution because it is a mixture of solid components and does not form a homogeneous mixture like saltwater, Coke, or trail mix.

Oliver, Ava, and Sophia are discussing the differences between a compound and a mixture. Can you help them understand?

• A compound is a combination of elements that lose their individual properties, while a mixture is a blend of substances that retain their individual properties

• A compound is a substance formed by the chemical combination of two or more elements, while a mixture is a blend of substances that retain their individual properties

Answer explanation

The correct answer is that a compound is a substance made up of two or more elements chemically combined, while a mixture is a combination of substances that maintain their individual properties. This means that in a compound, the elements are chemically bonded and form a new substance, whereas in a mixture, the substances are just mixed together but retain their original properties.

Which of the following is not a pure substance?

• Oxygen

• Gold

• Iron

• Fruit salad

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

• A compound is a substance formed by the chemical combination of two or more elements, while a mixture is a combination of substances that retain their individual properties

• A compound is a heterogeneous mixture with an uneven distribution of substances, while a mixture is a homogeneous mixture with an even distribution of substances

Which of the following is not a pure substance?

• Sugar

• Trail mix

What is the main characteristic of mixtures?

• A combination of two or more substances where each substance maintains its individual properties

• A combination of substances that results in a new substance with distinct properties

What is the main characteristic of mixtures?

• A combination of two or more substances where each substance maintains its individual properties

• A combination of substances that results in a new substance with distinct properties

On their science expedition, Ava, Zoe, and James discovered four materials: Salt, Soil, Lemon Juice, and Water. Which of these is NOT a solution?

• Salt

• Soil

• Lemon Juice

• Water

Which of the following is not a pure substance?

• Sugar

• Trail mix

• Gold

• Iron