Term 3 Practice Paper

Which of the following substances does not contain acid?

• vinegar

• ammonium solution

• gastric juice

• orange juice

What is the salt produced when magnesium hydroxide is placed in a test tube of dilute sulfuric acid?

• Sodium sulfate

• Magnesium sulfate

• Magnesium hydroxide

• Hydrogen gas

Which of the following is the correct general equation when acid react with alkali?

• water + salt --> alkali + acid

• acid + salt --> alkali + water

• acid + alkali --> salt + water

• acid --> alkali + salt + water

The following are metals except.............................

• Magnesium(Mg)

• Phosphorous (P)

• Calcium (Ca)

• Sodium (Na)

Which of the following alloy is made from the mixture of iron and carbon?

1 point

• bronze

• brass

• steel

• tungsten

Leo gives his friend a jewelry that is made from gold. Which of the following properties of gold that is suitable in making jewelry?  

• rigid and flexible

• hard and brittle

• malleable and shiny

• transparent and waterproof

Ferdz is using phenolphthalein to test whether the aqueous solution is an acid or an alkali. What is the color of this indicator when in alkali?

• colorless

• blue

• yellow

• pink

Why would you use soap to neutralize a bee sting?

• soap is slippery and it is very good for bee sting

• bee sting is acidic so it needs to be neutralize by soap which is an alkali

• soap are made from fats and it is very soapy that will remove the pain of bee sting

• soap is a non metal and it will react to bee sting to reduce the swelling

Tungsten has chemical symbol of W. This is used in a light bulb because

• it has a low melting point and good heat conductor

• it has a high melting point and a good electrical conductor

• it is shiny and malleable

• it is ductile and has low melting point

 An evaporating dish is made of ceramics because

• it is brittle

• it is good conductor of electricity

• it is highly heat resistant

• it is ductile