Fall Semester Final Review

Front

How many elements are in the compound Fe₂O₃?

Back

2

Front

During which time interval does the car travel at the greatest average speed?

Back

Between 30 to 40 min

Front

Which object has the greatest average speed? A truck traveling 48 km in 1 hour, A bus traveling 90 km in 2 hours, A train traveling 120 km in 3 hours, A sailboat traveling 80 km in 4 hours.

Back

A truck traveling 48 km in 1 hour.

Front

According to Newton’s law of motion, which object will change its motion? A bike rider on a smooth and level road, A chair sitting on the floor with balanced forces, A ball rolling across the floor with friction, A train pulling on another train with the same force.

Back

A ball rolling across the floor with friction acting in the opposite direction.

Front

How are elements and compounds different?

Back

A compound is represented by a chemical formula, and elements are represented by a chemical symbol.

Front

What is a chemical element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What does a distance-time graph represent?

Back

It shows the relationship between distance traveled and time taken.

Front

What is average speed?

Back

The total distance traveled divided by the total time taken.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.