6th Grade Fall Semester Exam

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances, often accompanied by energy changes, such as burning wood.

Front

What is the fixed shape and volume of glass?

Back

Glass has a fixed shape and volume; its molecules are tightly packed and vibrate in place.

Front

How does a magnetic field work?

Back

A magnetic field consists of invisible lines of force that extend from one pole of a magnet to the other, influencing other magnetic objects within its reach.

Front

What determines if an object will float in water?

Back

An object will float in water if it is less dense than water.

Front

What is density?

Back

Density is a measure of how much mass is contained in a given volume, calculated as density = mass / volume.

Front

What happens to the temperature during a chemical reaction?

Back

The temperature can change during a chemical reaction, indicating that energy is being absorbed or released.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change, where the substance changes state but not its chemical composition.

Front

What is the role of molecules in solids?

Back

In solids, molecules are closely packed together and vibrate in place, giving solids a fixed shape and volume.

Front

What is the principle of buoyancy?

Back

The principle of buoyancy states that an object will float if it displaces a volume of fluid equal to its weight.