P.5.5A Review

Which substance would have definite volume but no definite shape?

• wood

• oxygen gas

• milk

• ice

Which substance would have no definite shape or volume?

• wood

• oxygen gas

• milk

• ice

Tags

NGSS.MS-PS1-4

A student fills two large bowls, A and B, with 500 mL of water each. He adds 115 g of salt to Bowl A and allows the salt to dissolve completely. He places an egg in Bowl B and observes that the egg sinks. The student then places the same type of egg in Bowl A and observes that the egg floats. What can be correctly concluded from the observation?

• Salt decreases the mass of water

• Salt increases the density of water

• Salt decreases the volume of water

• Salt increases the temperature of water

Emily conducts an experiment to compare the densities of cork and iron with water. She places a piece of cork and a small iron nail in a beaker filled with 100 mL of water, and she records her observations.

1. The piece of cork floats on water.

2. The iron nail sinks to the bottom of the beaker.

What can Emily conclude from her experiment?

• Both the cork and the iron nail are more dense than water

• Both the cork and the iron nail are less dense than water

• The cork is more dense than water, and the iron nail is less dense than water

• The iron nail is more dense than water, and the cork is less dense than water

A student creates a model of an atom. The student makes a mistake. How should the student correct the mistake, and why?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

A researcher works to separate substances X and Y into smaller parts using chemical processes, as shown. Which substance represents a molecule?

• Y is a molecule because it cannot be separated into smaller parts

• X is a molecule because it cannot be separated into smaller parts

• Y is a molecule because it can be separated into smaller parts

• X is a molecule because it can be separated into smaller parts

Tags

NGSS.MS-PS1-1

The properties of substance X are shown in the table. How is substance X best classified?

• Substance X is a solid because it is clear and has a definite volume

• Substance X is a gas because it has an indefinite shape and has a definite volume

• Substance X is a solid because it is clear, and the particles are close to each other

• Substance X is a liquid because it has a definite volume, and the particles slide past each other

Peter wants to know the volume of object A. He fills a graduated cylinder with 10 mL of water and then places object A inside the graduated cylinder. He draws a before and after diagram in his science notebook. What is the volume of object A?

• 20 mL

• 15 mL

• 10 mL

• 5 mL

A student makes a partial circuit by connecting a battery with a light bulb using wires. The student then completes the circuit using different materials to check if the light bulb glows, as shown in the setup and table. Which material can be classified as an electrical conductor?

• iron paper clip

• plastic spoon

• rubber band

• strand of wool

Tags

NGSS.4-PS3-2

NGSS.5-PS1-3

Sugar will dissolve in water, but flour will not. Which property of these two substances explains the difference in dissolving in water?

• mass

• color

• density

• solubility