Modeling Matter -- Chapter 2

Front

What is the Evaporation Test used for?

Back

The Evaporation Test is used to demonstrate that a substance, like sugar, does not disappear when dissolved in water; it can be recovered by evaporating the water.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What happens to solid molecules like cumin and pepper when they are mixed with a liquid and do not dissolve?

Back

The solid molecules cluster together and are not attracted to the liquid molecules.

Front

What does it mean if a substance is described as 'soluble'?

Back

A substance is soluble if it can dissolve in water or if its molecules are attracted to water.

Front

What are the possible outcomes when mixing a liquid with a solid?

Back

A. The solid doesn't dissolve. B. The solid only half-way dissolves. C. The solid will completely dissolve.

Tags

NGSS.MS-PS1-2

Front

How can you test if sugar is still present in sugar water?

Back

Weigh the sugar and water separately before they are combined; after they have been combined, weigh the solution.

Front

What is solubility?

Back

Solubility is the ability of a substance to dissolve in a solvent, such as water.

Tags

NGSS.MS-PS3-4

Front

What is the difference between soluble and insoluble substances?

Back

Soluble substances can dissolve in a solvent, while insoluble substances cannot.

Front

What is chromatography?

Back

Chromatography is a method used to separate mixtures and analyze the components, often used to test the purity of substances.

Front

What does it mean for a solid to be clustered together in a liquid?

Back

It means that the solid particles are not interacting with the liquid molecules and remain grouped instead of dispersing.

Front

What is the role of temperature in dissolving solids in liquids?

Back

Increasing the temperature usually increases the solubility of solids in liquids, allowing them to dissolve more easily.

Tags

NGSS.MS-PS1-4