WATER

1) Which of the following is the chemical formula for water?

• NaCl

• H2O

• CO2

• NaOH

• W

Which of the following is the solid state of water?

• Ice

• Liquid

• Salt water

• Vapor

• None of the Above

Which of the following is the gaseous state of water?

• Ice

• Liquid

• Salt water

• Vapor

• None of the Above

Around how much of the Earth's surface is covered with water?

• 5%

• 20%

• 40%

• 55%

• 70%

True or False: Water is only found on Earth because Hydrogen and Oxygen are rarely found outside the Earth's atmosphere.

• TRUE

• FALSE

Which of the following is a way that water is used by humans?

• To create energy

• To grow food

• To wash clothes

• To put out fires

• All of the Above

Through what action do most people use the most water each day?

• Brushing their teeth

• Washing clothes

• Taking a shower

• Flushing the toilet

• Washing dishes

True or False: Pure water usually has a very sweet taste when all the impurities are removed.

• TRUE

• FALSE

What elements make up water?

• Hydrogen and Oxygen

• Sodium and Chlorine

• Carbon and Hydrogen

• Helium and Oxygen

• Hydrogen and Nitrogen

What is 'potable' water?

• Water that has been polluted

• Water that is frozen in glaciers

• Water that is drinkable

• Salt water from the oceans

• Water contaminated with deadly bacteria