PRE-TEST

All of the following are macroscopic properties of a sample EXCEPT

• Color

• Electrical Conductivity

• Percentage of elements that compose it

• Arrangement of atoms in the structure

Which of the following is a microscopic property of matter?

• Density

• The distance between atoms

• Color

• Hardness

All of the following are chemical processes EXCEPT?

• A liquid vaporizing to form a gas

• An acid dissolving a metal

• Rusting of Iron

• Conversion of starch to carbon dioxide and water in an animal

Which of the following operations will yield an intensive property?

• Determining the energy of a sample in joules

• Multiplying one extensive property by another extensive property

• Dividing one extensive property by another extensive property

• Measuring the length of an object in meters

Which of the following is NOT a logical consequence of the Law of Definite Proportion?

• Matter consists of atoms that have finite sizes

• Fixed whole numbers of atoms combine to form compounds

• Atoms are hard spheres

• Atoms of the same element are the same

All are considered to be True EXCEPT:

• Atoms are made up of electrons, protons, and neutrons

• All atoms of a given element contain the same number of neutrons

• Chemical combinations of atoms are called compounds

• The atomic number of an element indicates the munber of protons in each atom of the element

Particles of matter have the following characteristics:

• Constantly moving

• Considered very small

• Ability to attract each other

• AOTA

Which of the following is a property of a solid ?

• Compressibility

• Low density

• Definite shape

• Less intermolecular force

By which technique wherein a salt can be obtained from sea-water

• Filtration

• Evaporation

• Distillation

• Chromatography

Which of the following is INCORRECT about plasma?

• The plasma glows with color which does not depend upon nature of gas

• The gas gets ionized when electrical energy flows through it

• Fluorescence tube and neon sign bulbs consist of plasma

• NOTA