Chemistry Midterm Review 24-25

Front

What is a key lab safety rule regarding chemical disposal?

Back

Never take used chemicals home; they should be disposed of properly in the lab.

Front

Which group of elements is known for being completely stable and non-reactive?

Back

Noble gases are completely stable and do not bond with other atoms.

Front

What particle in an atom carries a negative charge?

Back

The electron carries a negative charge.

Front

Which two elements are expected to make the same number of bonds due to their group in the periodic table?

Back

Fluorine (F) and chlorine (Cl) are expected to make the same number of bonds.

Front

What laboratory equipment is specifically designed for measuring liquid volumes?

Back

A graduated cylinder is used for measuring liquids.

Front

What is the charge of a neutron?

Back

A neutron has no charge; it is neutral.

Front

What is the primary purpose of wearing safety goggles in a lab?

Back

Safety goggles protect the eyes from chemical splashes and debris.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What is the significance of checking chemical labels in the lab?

Back

Checking chemical labels ensures that the correct substance is being used, preventing accidents.

Front

What type of bond involves the sharing of electron pairs between atoms?

Back

Covalent bonds involve the sharing of electron pairs.