Chemistry Concepts for Grade 10

What are the common properties of acids?

• Ability to absorb heat

• Bitter taste

• Common properties of acids include sour taste, ability to conduct electricity, reaction with bases, and turning blue litmus paper red.

• Turning red litmus paper blue

How do acids react with metals?

• Acids react with metals to produce oxygen gas and water.

• Acids do not react with metals at all.

• Acids react with metals to produce hydrogen gas and a salt.

• Acids react with metals to form carbon dioxide and a base.

What is the pH range of acids?

• 0 to 7

• 8 to 14

• 7 to 14

• -1 to 0

What are the properties of bases?

• Bases have a bitter taste, slippery feel, change litmus paper to blue, and react with acids.

• Bases have a sour taste

• Bases do not react with acids

• Bases turn litmus paper red

How do bases feel to the touch?

• Bases feel sticky and tacky to the touch.

• Bases feel rough and gritty to the touch.

• Bases feel warm and dry to the touch.

• Bases feel slippery or soapy to the touch.

What is the pH range of bases?

• 1 to 14

• 0 to 7

• 7 to 14

• 5 to 10

What is a neutralization reaction?

• A reaction between an acid and a base that produces water and a salt.

• A reaction that only occurs in solid state without any liquid involvement.

• A reaction between a base and a metal that produces hydrogen gas.

• A reaction between two acids that produces carbon dioxide.

What are the products of a neutralization reaction?

• Hydrogen and chlorine

• Water and salt

• Acid and base

• Carbon dioxide and oxygen

How do acids and bases react with each other?

• Acids and bases explode when mixed together.

• Acids and bases form gas and a liquid when they react.

• Acids turn into bases upon reaction with each other.

• Acids and bases neutralize each other to form water and a salt.

What are the different types of metals?

• Liquid metals

• Ferrous metals, non-ferrous metals, precious metals, alloy metals

• Organic metals

• Synthetic metals