Safety, Elements, Compounds, Counting Atoms Test Review

Front

What should you do with long hair during a lab?

Back

Always wear your hair tied back.

Front

Which of the following is NOT a safe lab practice? Mixing two unknown chemicals together, Keeping your hair away from flames, Washing your hands after each lab.

Back

Mixing two unknown chemicals together is NOT a safe lab practice.

Front

How many Sodium (Na) atoms are in the chemical formula NaCl?

Back

1 Sodium (Na) atom.

Front

How many Carbon (C) atoms are in the chemical formula C6H12O6?

Back

6 Carbon (C) atoms.

Front

How many elements are in the chemical formula C6H12O6?

Back

3 elements: Carbon (C), Hydrogen (H), and Oxygen (O).

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the importance of safety goggles in a lab?

Back

Safety goggles protect your eyes from harmful chemicals and debris.

Front

What is the purpose of a lab apron?

Back

A lab apron protects your clothing and skin from spills and splashes.

Front

What is the chemical formula for water?

Back

H2O, which consists of 2 Hydrogen (H) atoms and 1 Oxygen (O) atom.