Quiz 1

The smallest particle of indivisible matter in an element in which a chemical change can take place is called:

• an atom

• a proton

• an electron

Which of the following statements is correct?

• Protons have positive electrical charge, electrons negative and neutrons neutral.

• Protons have negative electrical charge, electrons positive and neutrons neutral.

• Neutrons are electrically charged negative, protons positive and electrons are neutral.

A compound is a:

• 2 or more elements mixed together

• solution of elements to form a powder

• mixture of 2 or more elements chemically bonded together

H2O can exist in:

• one state only

• two states

• three states

Latent energy may be described as the energy:

• required to heat 1 Kg of a substance by 1ºC

• contained in 1 Kg of a substance at a specific temperature

• the energy required to change the state of a substance

Which of the following are considered as Basic SI units:

• Temperature, Electric current, Density and Time

• Time, Mass, Length and Electric Current

• Length, Temperature, Velocity and Weight

A moment may be described as:

• the turning effect about a point

• an instantaneous transfer of momentum

• work done about a point

Which of the following is a vector quantity?

• Force

• Temperature

• Mass

The centre of an area is called the:

• aneroid

• centroid

• frustrum

How is Relative Density calculated?

• The Mass of any volume of a substance divided by an equal volume of water.

• The Mass of any volume of a substance multiplied by an equal volume of water.

• The Mass of a specific volume of a substance divided by a litre of water at 4° Celcius