Chemistry Lab Safety and Concepts Flashcard

Front

What charge do Group 17 elements (halogens) typically form when they become ions?

Back

-1

Front

What do elements in the same period have in common?

Back

They have the same number of electron shells.

Front

What is the Tyndall effect used to distinguish between?

Back

Colloids and suspensions.

Front

What is the first thing you should do when entering a chemistry lab?

Back

Put on safety goggles.

Front

How does Carbon-14 differ from Carbon-12?

Back

Carbon-14 has 2 more neutrons.

Front

What is the definition of a colloid?

Back

A mixture where tiny particles are dispersed throughout a substance but do not settle out.

Front

What is the definition of a suspension?

Back

A mixture in which particles are dispersed throughout a liquid or gas but are large enough to settle out over time.

Front

What safety equipment is essential in a chemistry lab?

Back

Safety goggles, gloves, and lab coats.

Front

What is the purpose of a Bunsen burner in a chemistry lab?

Back

To provide a controlled flame for heating substances.

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.