Checkpoint practice 2024 part 1

Which statement BEST describes what happens as water changes from one state to another?

• As water is cooled, it freezes and changes from a solid to a liquid.

• As water is cooled, it condenses and changes from a gas to a liquid.

• As water is heated, it evaporates and changes from a liquid to a solid.

• As water is heated, it melts and changes from a gas to a solid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A student washes dishes using hot water. This causes fog to form on the student's eyeglasses. Which process caused the fog to form on the eyeglasses?

• Water vapor melted on the student's eyeglasses.

• Water vapor evaporated off the student's eyeglasses.

• Water vapor condensed on the student's eyeglasses.

• Water vapor froze on the student's eyeglasses.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Students observe a glass of ice and water. The glass is dry on the outside. After ten minutes students see drops of water on the outside of the glass. Which statement best explains the students’ observations?

• The water vapor in the air changes to a liquid when it touches the cold glass.

• The cold water inside the glass rises and then slides down the outside of the glass.

• The ice in the glass melted and caused the water to overflow the glass.

• The water moved to the outside surface through tiny holes in the glass.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-ESS2-4

Some students are using samples of different substances for a lab investigation. They plan to observe the physical properties of each substance and record their observations in a table like the one below. Which of the substances observed are elements?

• S, Fe, O₂, Sr, and Al

• S, O₂, and LiF

• N₂O₄, O₂, and LiF

• N₂O₄, Fe, Sr, and Al

Tags

NGSS.MS-PS1-1

Which of the following is a correct statement regarding mixtures?

• Mixtures are composed of a single substance.

• Mixtures are composed of more than one substance.

• Mixtures have a fixed composition.

• All substances in a mixture are visible at all times.

The chart shows properties of four elements. Based on these properties, which element is most likely a nonmetal?

• Element 1

• Element 2

• Element 3

• Element 4

A student places objects in a bucket of water to determine if they will float. Which set of items is less dense than water?

• Plastic paper clip, penny, and cork

• Toothpick, metal spoon, and plastic paper clip

• Metal spoon, vegetable oil, and penny

• Toothpick, cork, and vegetable oil

Tags

NGSS.MS-PS1-2

Which of the following best describes a change in iron caused by a chemical reaction?

• An iron nail looks shiny and silvery.

• An iron nail rubbed with a magnet attracts iron powder.

• An iron wire left outside turns a rusty orange color.

• An iron wire attached to a battery becomes hot.

Tags

NGSS.MS-PS1-2

Nitrogen dioxide is a gas that can be generated by emissions from vehicles and factories. It can also be generated by natural sources, such as forest fires, lightning, and microbial activity in soil. The equation for producing nitrogen dioxide is shown below.

• A gas is present.

• The total number of atoms remains unchanged.

• The state of matter remains the same.

• A brown gas is produced.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Match each term with its definition.

• Indefinite Shape and Indefinite Volume

• Solid

• Anything with Mass and Volume

• Gas

• Amount of Atoms

• Liquid

• Indefinite Shape and Definite Volume

• Matter

• Definite Shape and Definite Volume

• Mass

Tags

NGSS.MS-PS1-4