Which of the following is an allotrope of carbon?

George is trying to compress a gas in a syringe. He pushes the plunger, and the gas compresses easily. He then tries to compress a solid metal rod. He cannot compress it. What property of matter explains this difference?

Waseem is studying the properties of matter. He observes that a solid has a fixed shape and volume. What is the arrangement of particles in a solid?

Victor is looking at a glass of milk. He notices that it appears uniform but when he looks closely, he can see tiny particles that scatter light. Milk is an example of which type of mixture?

Tina has a solution of potassium permanganate in water. The solution is purple and uniform. If she adds more water, the solution becomes lighter. What is happening to the concentration?

A heterogeneous mixture has:

Muddy water is an example of:

Sam is preparing a solution where the solvent is alcohol and the solute is iodine. The resulting mixture is used as an antiseptic. What type of solution is this based on the solvent?

Quinn is studying the solubility of potassium nitrate in water. He heats the water and finds that more potassium nitrate dissolves. What is the effect of temperature on the solubility of most solids?

The substance that gets dissolved is called:

Uma is studying the solubility of sugar in water. She finds that at 20°C, she can dissolve 200 g of sugar in 100 g of water. If she tries to dissolve 250 g in 100 g of water at 20°C, what will happen?

Allotropes are different forms of:

Julia is making lemonade. She adds sugar and lemon juice to water and stirs until the sugar disappears. The resulting liquid looks uniform throughout. What type of mixture is this?

Which of the following is an example of a colloid?

Amina has a glass of orange juice with pulp. The pulp particles are visible and will eventually settle at the bottom if left undisturbed. This is an example of:

Which of the following best describes solubility?

Plasma is mainly found in:

Which of the following is a mixture?

Lara is looking at a diamond ring and a pencil lead. She knows both contain carbon but have very different properties. The pencil lead contains which allotrope of carbon?

Which of the following is a physical property?

Oliver is studying a mixture of water, sugar, and sand. He filters the mixture and collects the sand. The filtrate (liquid that passes through) is clear. What is the filtrate?

Bilal is doing an experiment with a substance that takes the shape of its container but has a definite volume. He pours it from a beaker into a graduated cylinder, and it flows easily. What state of matter is Bilal working with?

Chloe reads that a certain state of matter has no fixed shape or volume and particles are far apart with very weak forces. She observes helium gas in a balloon. What state of matter is helium in the balloon?

Which factor affects solubility?

Solubility of gases in liquids increases with:

Graphite is an allotrope of:

Which state of matter has no definite shape and volume?

Patricia is making a solution of salt in water. She keeps adding salt until no more salt will dissolve and some salt remains at the bottom. What type of solution does Patricia have?

Nora is learning about the effect of temperature on gas solubility. She opens a cold soda can and it is more fizzy than a warm one. What is the relationship between gas solubility and temperature?

Increase in temperature usually increases solubility of: