Chem Comm ~ Final Exam Questions Practice #1

What happens when the data does not support the hypothesis?

• The data is incorrect and thrown out
• The hypothesis is revised
• The data are altered to support the hypothesis
• The scientist gives up and starts a new topic

What is the physical or mental representation of an object or an event?

• a theory
• a hypothesis
• a model
• a scientific law

Measurements include both a number and a 

• theory
• model
• unit
• law

What is a solution?

• A mixture containing two compounds, one dissolved in the other

• A compound in liquid form

• Two solids dissolved together

• The answer to all life's questions

What is a solute?

• The substance that gets dissolved in a solution

• The combination of a dissolved solid and the liquid it is dissolved in

• The substance that does the dissolving in a solution

What is true of something that is insoluble in water?

• It will dissolve when mixed with water

• You will see solid, undissolved particles on the bottom of the contained if you mix it with water

• When mixed with water, it will always cause the water to change color

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

The elements on the Periodic Table are arranged in order of increasing

• atomic mass

• atomic number

• first ionization energy

• selected oxidation state

Who invented the Periodic Table?

• Mendeleev

• Bohr

• Lewis

• Democritus

What does the 6 represent?

• atomic mass
• atomic number
• element name
• chemical symbol