2nd Semester Chemistry Review

Front

What is the number of nitrogen atoms in a molecule of N2?

Back

2

Tags

NGSS.MS-PS1-1

Front

What are the blue numbers in a chemical formula called?

Back

Subscripts

Front

Which state of matter has the most kinetic energy?

Back

Gas

Tags

NGSS.MS-PS1-4

Front

What is the state of a substance that is dissolved in water?

Back

Dissolved in water

Front

How many S'mores can be made with the formula 2C + 1M + G2 → C2MG2 if you have 5 Marshmallows (M), 9 Chocolate Pieces (C), and 9 Graham Cracker Halves (G)?

Back

4

Front

What is the definition of a chemical reaction?

Back

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 law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Tags

NGSS.MS-PS1-5

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture.

Tags

NGSS.MS-PS1-2

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the definition of a solution?

Back

A homogeneous mixture of two or more substances.