Elements

Question 1

Which physical property can be measured?

Revolt · Accepted Answer

density

Question 2

Use the drop-down menus to determine which physical properties are being described. Copper wire is used to transfer electricity. There are 19.3 grams of gold in one cubic centimeter. Iron turns to liquid at 1,534.85°C. Silver is very easy to bend. Fluorite is a green crystal.

Revolt · Accepted Answer

Selection 1: conductivity; Selection 2: density; Selection 3: melting point; Selection 4: hardness; Selection 5: color

Question 3

Which statement explains why sugar dissolves easily in water, but sand does not?

Revolt · Accepted Answer

Sugar has a greater solubility than sand.

Question 4

Noah drops a rock with a density of 1.73 g/cm3 into a pond. Will the rock float or sink? Explain your answer.

Revolt · Accepted Answer

The rock will sink because it is more dense than water.

Question 5

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

The rock will sink.; The rock is more dense than water.

Question 6

Describe all of the forces acting on the ice cream in the root beer float. Relate these forces to the fact that the ice cream is floating.

Revolt · Accepted Answer

Gravity (the ice cream’s weight) pulls downward, and the buoyant force from the root beer pushes upward. These forces are equal and opposite, so the ice cream floats without sinking.

Question 7

Gabriel accidently drops a glass on the kitchen floor, and it shatters. Which statements describe the physical change that has occurred? Check all that apply.The shape of the glass has changed.The identity of the glass has changedThe mass of the glass has changed.The size of the glass has changed.The density of the glass has changed.

Revolt · Accepted Answer

The shape of the glass has changed.; The size of the glass has changed.

Elements Answers

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