Chemistry Semester Exam

Front

Which element is in period 3 and group 14?

Back

Silicon is the element located in period 3 and group 14 of the periodic table.

Tags

NGSS.HS-PS1-1

Front

What is a vertical column in the periodic table called?

Back

A vertical column in the periodic table is called a group.

Front

Explain nuclear fission.

Back

Nuclear fission is the process of splitting a heavy nucleus into lighter nuclei, releasing energy.

Tags

NGSS.HS-PS1-8

Front

What is the main purpose of the periodic table?

Back

The main purpose of the periodic table is to organize elements based on their properties.

Tags

NGSS.HS-PS1-1

Front

What is a safety rule in a chemistry lab?

Back

Always wear safety goggles in a chemistry lab.

Front

Define atomic number.

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the difference between an element and a compound?

Back

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

Front

What is the significance of the periodic table's arrangement?

Back

The arrangement of the periodic table reflects the periodic trends in element properties, such as electronegativity, atomic radius, and ionization energy.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What is an ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net electrical charge.

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.HS-PS1-7