6th Grade Final Exam Review

Dmitri Mendeleev discovered patterns in the properties of elements when he arranged them in order by increasing

• number of electrons
• number of neutrons. 
• atomic size. 
• atomic mass.

Which of the following is a property of metals?

• They are dull
• They are good conductors. 
• They break easily. 
• They are not malleable.

Which of the following statements about nonmetals is true? 

• Nonmetals are usually very shiny. 
• Many nonmetals are liquids at room temperature.
• Nonmetals are good electrical conductors. 
• Many nonmetals are gases at room temperature.

 Which group of the periodic table contains the most reactive metals? 

• Group 1
• Group 12 
• Group 17
• Group 18

Which group contains nonmetals that are very reactive? 

• Group 15: the nitrogen family 
• Group 16: the oxygen family 
• Group 17: the halogen family 
• Group 18: the noble gases

If you are sitting in a train, looking out the window, and you see another train pass, what is the reference point you use to tell which train is moving

• your body 
• the train
• a passing train
• the landscape

 What determines the strength of the gravitational attraction between two objects? 

• charge and mass 
• density and mass 
• distance and mass 
• size and mass

Which of the following equations expresses Newton’s second law of motion? 

• Acceleration = Mass ÷ Net Force 
• Acceleration = Net Force ÷ Mass 
•  Acceleration = Mass × Net Force 
•  Acceleration = Mass + Net Force

Which of the following is a true statement about action-reaction forces? 

• They are equal and cancel each other. 
• They act on different objects. 
• Both act at a distance. 
• They act only when there is no friction.

 Which statement about mass and weight is correct? 

• "Mass” is the scientific term for “weight.” 
• Weight directly measures force while mass directly measures amount of matter. 
•  Weight has units of kilograms or grams. 
• Mass has units of newtons.