Mid-term Exam

Front

What kind of energy is stored in a battery?

Back

Chemical energy is stored in a battery, which can be converted to electrical energy when needed.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Front

Do all chemical reactions create new substances?

Back

True. All chemical reactions involve the transformation of reactants into new products, resulting in new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Can energy be created or destroyed?

Back

False. According to the law of conservation of energy, energy cannot be created or destroyed, only transformed from one form to another.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Front

What is the most common type of element in the Periodic Table?

Back

Most elements in the Periodic Table are metals, which are characterized by their ability to conduct electricity and heat.

Front

What kind of star has a luminosity of 100 and a temperature of 3000?

Back

A star with a luminosity of 100 and a temperature of 3000 is classified as a Giant star.

Front

What is the definition of chemical energy?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, like atoms and molecules.

Tags

NGSS.HS-PS1-4

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Tags

NGSS.MS-PS1-5

Front

What are the three main types of elements in the Periodic Table?

Back

The three main types of elements are metals, nonmetals, and metalloids.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Tags

NGSS.MS-PS1-5