Unit 2 Final Review (Chemistry)

Front

What is PPE in a laboratory setting?

Back

PPE stands for Personal Protective Equipment, which includes items like goggles, gloves, lab coats, and face shields that protect the wearer from hazards.

Front

Who discovered the neutron?

Back

James Chadwick discovered the neutron, a subatomic particle with no charge that plays a crucial role in the structure of atoms.

Front

Which of the following is NOT an appropriate unit for measuring density?

Back

mL/cm^3 is not an appropriate unit for measuring density.

Front

What are the Halogens?

Back

The Halogens are a group (family) in the periodic table that includes elements like Fluorine, Chlorine, Bromine, Iodine, and Astatine.

Front

How is Calcium (Ca) classified in the periodic table?

Back

Calcium (Ca) is classified as a metal.

Front

What is the definition of density?

Back

Density is defined as mass per unit volume, typically expressed in units like kg/m^3 or g/cm^3.

Front

What is the significance of neutrons in atomic structure?

Back

Neutrons contribute to the mass of an atom and help stabilize the nucleus by offsetting the repulsive forces between protons.

Front

What are the main categories of elements in the periodic table?

Back

The main categories are metals, non-metals, and metalloids.

Front

What is the role of goggles in a laboratory?

Back

Goggles protect the eyes from chemical splashes, flying debris, and other hazards.

Front

What is the difference between a period and a group in the periodic table?

Back

A period is a horizontal row of elements, while a group (or family) is a vertical column of elements with similar properties.