4.2

The diagram shows Substance U being formed, then separated back into its parts. Use the diagram to answer any questions that follow. Based on the methods used to separate the substance into its parts, is Substance U a compound?

• No, it is a mixture, because physical methods were used to separate its parts.

• No, it is a mixture, because chemical methods were used to separate its parts.

• Yes, it is a compound, because physical methods were used to separate its parts.

• Yes, it is a compound, because chemical methods were used to separate its parts.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

The picture below shows four liquids: tea, water, orange juice, and fruit punch. Which of the liquids are mixtures?

• Tea, Orange juice, and Fruit punch

• Orange juice and Fruit punch, only

• Tea, Water, and Fruit punch

• Water and Tea, only

Bases are a group of compounds that are identified by their shared properties, and they are described as the opposite of acids. Which of the following are properties of bases?

• tastes sour, reacts with metals and carbonates, and turns blue litmus paper red

• tastes bitter, reacts with metals and carbonates, and turns red litmus paper blue

• tastes sour, feels slippery, and turns blue litmus paper red

• tastes bitter, feels slippery, and turns red litmus paper blue

Which of the following is NOT true about compounds?

• They are held together with chemical bonds.

• They can be represented with a chemical formula.

• They are made up of more than one type of element.

• They cannot be broken down into smaller substances.

Tags

NGSS.MS-PS1-1

The picture below shows Kelsey's glass of ice water. Which of the following is correct about Kelsey's glass of ice water?

• It is a mixture now because the water and ice can be seen in the glass, but it will not be a mixture when the ice cubes melt.

• It is not a mixture now because the ice is floating on the water, but it will be a mixture when the ice cubes melt.

• It is not a mixture because ice and water are the same thing in two different states.

• It is a mixture because ice and water are two different things in two different states.

Tags

NGSS.5-PS1-4

The picture shows five jars containing a variety of objects. Use the picture to answer any questions that follow. If Jar I is poured into Jar J, it will form

• a mixture.

• a solution.

• a molecule.

• a compound.

Tags

NGSS.MS-PS1-2

The relationships among various types of matter are shown below. Which label would be most appropriate for Box 2?

• Atoms

• Mixtures

• Solutions

• Pure Substances

Jasmine has been reading about mixtures and how they can be classified. After reading that a solution is a homogeneous mixture, she wondered about her favorite morning drink, grape juice. Which statement about the solution that makes up grape juice is true?

• Sugar is the solvent and water is one of the solutes.

• Water is the solvent and sugar is one of the solutes.

• Grapes are the solvent and water is one of the solutes.

• Sugar is one of the solvents and grapes are one of the solutes.

A student combines samples of two elements, one that is blue in color and one that is red in color. The resulting substance will be

• an atom that will display both the red and blue colors of its elements.

• a mixture of some red particles and some blue particles from its elements.

• a compound that will display a purple color from the combination of its elements.

• a compound that may have a color completely different from the colors of its elements.

Tags

NGSS.MS-PS1-1

A student is examining the liquid mercury inside a thermometer. If the liquid is composed of only mercury atoms, what can the student conclude?

• The liquid is a pure substance represented by the symbol Hg.

• The liquid is a pure substance represented by the symbol Mg.

• The liquid is an impure substance because it is in a liquid state.

• The liquid is an impure substance because it is inside a thermometer.

Tags

NGSS.MS-PS1-1