Chemistry Questionnaire

Selenium is a ______.

• Gas

• Metal

• Metalloid

• Compound

What is the chemical formula for toothpaste?

• C₃H₈O₃

• NaF

• C₃H₆O

• NaOCl

A ____ is the smallest particle of a compound.

Which of the following are immiscible liquids?

• Juice and Water

• Honey and Water

• Hair oil and Water

• Milk and Tea

The rate of sedimentation is _______ by loading.

Liquids that dissolve in each other are called______.

A separating funnel has______ on the top and _______ at the bottom.

Sieving is used to separate

• Grain from chaff

• Flour and stones

• Iron fillings and salt

• Sand and water

True or False

The molecules of carbon dioxide are different from the molecules of common salt.

Clean waterand muddy water are separated by ________.