Science Midterm Review

William calculated the density for 5 samples of tap water. The volume of each sample is shown in Table A. When he measured the the mass and calculated the density of each sample, what should he have found?

• The largest volume of water had the largest density.

• The smallest volume of water had the largest density.

• All samples of water had the same density.

• The densities of the samples do not depend on the volume.

Your teacher gives you a container with a clear liquid in it. The liquid is a pure substance. What could you do to help identify the liquid in the container?

• Weigh the liquid and compare it to the weight of other liquids.

• Measure the volume of the liquid and compare it to the volumes of other liquids.

• Measure the temperature of the liquid and compare it to the temperature of other liquids.

• Determine the boiling point of the liquid and compare it to the boiling points of other liquids.

Two white powders are mixed together. A chemical reaction occurred, and a yellow powder was formed. What is the relationship between the yellow powder and the white powders?

• The yellow powder is made up of the same kinds of atoms as the white powders, but the atoms are combined into different molecules.

• The yellow powder is made up of the same kinds of molecules as the white powders, but the molecules are a different color.

• The yellow powder was released from inside the atoms of the white powders.

• There is no relationship between the yellow powder and white powders.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Earth's gravity is 6 times greater than the moon's gravity. If an object has a MASS of 600 grams on Earth, what would its MASS be if the object were on the moon?

• 60 grams

• 100 grams

• 600 grams

• 1200 grams

Which statement about mass or weight is correct?

• Mass is the scientific term for weight.

• Weight directly measures force.

• Weight is the amount of material in an object.

• Mass directly measures force.

Tags

NGSS.MS-PS2-4

Jenna's mass is 50 kilograms on Earth and 50 kilograms on the moon. However, her weight on Earth is 490 Newtons and on the moon is 406 Newtons. Why does Jenna's mass stay the same but her weight change?

• Jenna has less matter on the moon than Earth.

• The gravitational pull on Earth is less than that on the moon.

• Jenna has less matter on Earth than on the moon.

• The gravitational pull on Earth is more than that on the moon.

Tags

NGSS.MS-PS2-4

You find an object that is made of a pure metal. What could you do to identify which metal the object is made of?

• Determine its density and compare it to the density of other metals.

• Measure its length and compare it to the length of other metals.

• Determine its shape and compare it to the shape of other metals.

• Measure its mass and compare it to the mass of other metals.

A block of wood with a density of 10g/cm³ is cut in half. What would the expected density of the two halves be?

• The density would double

• The density would be halved

• The density would remain the same

• The density would increase by a quarter

Tim calculated the density of some objects in his science class. Which of the following measurements did Tim need in order to calculate the density?

• mass and weight

• volume and weight

• temperature and mass

• volume and mass

A rock was dropped into water in a graduated cylinder. What is the volume of the rock?

• 25 mL

• 40 mL

• 65 mL

• 105 mL

Tags

NGSS.MS-PS1-2