3rd Period Study Guide Review

True or False: Digesting food is a physical change?

• True
• False

A 5 kg object accelerates at 2 m/s². What is the net force acting on the object?

• 15 N​
• 10 N
• 7 N
• 2.5 N

What does the F mean in the equation F=ma?

• It means the weight of the object used
• It means the letter F
• It means the acceleration of the object
• It means the amount of Force put into the object (Newtons)

How can you identify metal? TWO CHOICES

• Shiny
• Dull
• Not good conductor of heat
• ducktile
• brittle

How many atoms are in 2H2O

• 4
• 8
• 6
• 1

evidence of a chemical change TWO CHOICES

• New substance formation
• water turns to ice
• Gas, light, or odor production
• break down into smaller pieces
• doesn't become into a new substance

Which scenario best illustrates Newton's First Law of Motion?

• A ball rolling to a stop due to friction.
• A guy running down the road
• A car accelerating on a straight road.
• A rocket launching upward while expelling gas downward.

What side is the product located in Chemical Equation

• left
• right

what is selective breeding

• humans select whitch organisms survive and pass on genetic material.
• nature selects whitch organisms survive,and pass o genetic material.

Bob is running down the road in till he hit a wall, when he hit the wall he fell backward onto the ground. What Law of motion did Bob experience?

• Newton's First Law
• Newton's Second Law
• Newton's Third Law
• None of the above