Quiz on Temperature and Molecules

What is Temperature?

• A measure of how hot or cold something is

• A measure of how fast or slow molecules are moving

• The amount of heat in a substance

• The speed of light in a vacuum

You place food coloring into a cup of hot water and a cup of cold water. In which cup will the food coloring spread out faster?

• Hot Cup- the molecules move faster in a hot substance than a cold substance

• Cold Cup- the molecules move slower in a cold substance

• Both cups will spread at the same rate

• Neither cup will spread the color

What is a molecule?

• A group of atoms joined together in a particular way

• A single atom

• A type of cell

• A form of energy

Which sample has more kinetic energy? How do you know?

• A- It is a lighter color and the key states that the lighter the color, the more KE the molecules have

• B- It is a darker color

• Both samples have the same kinetic energy

• Neither sample has kinetic energy

What is temperature related to?

• The movement of molecules

• The color of a substance

• The size of a molecule

• The weight of an object

What is absolute zero?

• When no molecules are moving in a substance

• The highest temperature possible

• The temperature of boiling water

• The freezing point of water

Can absolute zero be reached according to the article?

• NO

• YES

• Sometimes

• Only in space

Where are the coldest temperatures measured?

• Space

• Antarctica

• The North Pole

• Deep ocean trenches

What is an average?

• A number that summarizes a set of data and can be computed by adding all the numbers in a list and then dividing by the number of numbers in the list

• The largest number in a set of data

• The smallest number in a set of data

• A number that appears most frequently in a set of data

Calculate the average speed of the following set of molecules in Sample 1.

Sample 1 Molecules:

9,5,7,3,1

• 4

• 5

• 6

• 7