How does mass differ from weight?

Question

Responses

Mass is a measure of the force of gravity on an object, while weight is the amount of matter in an object.
Mass is a measure of the force of gravity on an object, while weight is the amount of matter in an object.

Mass and weight are the same thing.
Mass and weight are the same thing.

Mass is a measure of the matter in an object, while weight is the force of gravity acting on an object.
Mass is a measure of the matter in an object, while weight is the force of gravity acting on an object.

Mass and weight are completely unrelated concepts.

Answer 1

The correct response is:

Mass is a measure of the matter in an object, while weight is the force of gravity acting on an object.

To elaborate, mass is a scalar quantity that represents the amount of matter in an object and is typically measured in kilograms or grams. Weight, on the other hand, is a vector quantity that represents the gravitational force exerted on an object, calculated as the product of the object's mass and the acceleration due to gravity (weight = mass × gravity). Therefore, weight can vary depending on the gravitational field strength, while mass remains constant regardless of location.

Answer 2

A block of wood floats in water. Which of the following statements is correct?(1 point)
Responses

The wood has a higher density than water
The wood has a higher density than water

The wood has a lower density than water
The wood has a lower density than water

The wood and water have the same density
The wood and water have the same density

The density of the wood cannot be determined
The density of the wood cannot be determined

Answer 3

The correct response is:

The wood has a lower density than water.

A block of wood floats in water because its density is less than that of water. Objects that are less dense than the fluid they are in will float, while those with a higher density will sink. In this case, since the wood floats, it must have a lower density than the water.

Answer 4

Which of the following is an example of a mixture?(1 point)
Responses

Water
Water

Salt
Salt

Oxygen Gas
Oxygen Gas

Air

Answer 5

The correct response is:

Air.

Air is an example of a mixture because it is composed of different gases, primarily nitrogen and oxygen, along with smaller amounts of other gases like carbon dioxide and argon. In contrast, water is a compound formed from hydrogen and oxygen, salt is a compound made from sodium and chlorine, and oxygen gas is a single element.

Answer 6

Particles in each state of matter behave differently because they have different amounts of thermal energy. For each statement below, select whether it is true or false. (1 point)
True False
Particles in a solid are packed tightly.

Particles in a solid have thermal energy.

Particles in a solid are completely still.

Answer 7

Here are the answers for each statement:

1. Particles in a solid are packed tightly.
   True – In a solid, particles are closely packed together in a fixed arrangement.

2. Particles in a solid have thermal energy.
   True – Even though particles in a solid are tightly packed, they still possess some thermal energy, which allows them to vibrate in place.

3. Particles in a solid are completely still.
   False – While particles in a solid do not move freely like in liquids or gases, they are not completely still; they vibrate around their fixed positions.