CHEM 011 (Inorganic Chem)

Question 1

It is consist of 2 or more physically distinct phases

Answer 1

Heterogeneous Matter

Question 2

A homogeneous part of a system separated from other parts by physical boundaries

Answer 2

Phase

Question 3

Freshly Opened coke

Answer 3

Heterogeneous Mixture

Question 4

Air

Answer 4

Homogeneous Mixture

Question 5

It can be observed without changing the substance’s chemical composition

Answer 5

Physical Properties

Question 6

quality or condition of a substance that can be observed or measured without changing its composition

Answer 6

Physical Properties

Question 7

Color, Density, Odor, Melting and Boiling Point, Malleability, Ductility, etc., is an example of?

Answer 7

Physical Properties

Question 8

It describe the substance’s ability to react and to form new substances.

Answer 8

Chemical Properties

Question 9

It describe how substances react or change to form different substances.

Answer 9

Chemical Properties

Question 10

Resistance to corrosion, flammability, etc., is an example of?

Answer 10

Chemical Properties

Question 11

Properties that do not depend on the amount of substance present and can be used to establish the identity of the substance.

Answer 11

Intensive Properties

Question 12

Temperature, Melting Point, Boiling Point, Density, Color is an example of?

Answer 12

Intensive Properties

Question 13

Properties that depend on the quantity of substance present.

Answer 13

Extensive Properties

Question 14

E.X.A.M.S Mnemonic means?

Answer 14

Extensive Properties depend on the Amount of Substance

Question 15

Mass, Volume, Energy, etc. is an example of?

Answer 15

Extensive Properties

Question 16

It gives an idea of the composition or identity of a substance

Answer 16

Intensive Properties

Question 17

It gives an indication of the quantity of substance present

Answer 17

Extensive Properties

Question 18

Substance changes physical appearance without altering its identity.

Answer 18

Physical Change

Question 19

Are changes in matter that do not change the composition of a new substance

Answer 19

Physical Change

Question 20

Change in shape, volume, color, temperature, state, are an example of?

Answer 20

Physical Change

Question 21

Are changes that result in new substances

Answer 21

Chemical Change

Question 22

Substances transform into chemically different substances

Answer 22

Chemical Change

Question 23

Burning of wood, Rustling of Iron nail, Growth of plants, Oxidation, Combustion, Decomposition, Corrosion are an example of?

Answer 23

Chemical change

Question 24

Separation of Heterogeneous Mixture

Answer 24

Filtration, Decantation

Question 25

Separation of Homogeneous Mixture

Answer 25

Distillation, Solvent Extraction (liquid-liquid extraction), Adsorption, Chromatography

Question 26

It is a removal of solid from liquid heterogeneous mixture through a medium from which only the liquid can pass.

Answer 26

Filtration

Question 26

Separation of liquid from heavier solid by carefully pouring the liquid from the container in order to leave the solid in the bottom of the original container.

Answer 26

Decantation

Question 27

It is a process exploiting the differences between the boiling points of the components of the mixture.

Answer 27

Distillation

Question 28

Th component that boils off first is the ______ which the one that remains in the original container is the _______.

Answer 28

Distillate and Residue

Question 29

It is a method to separate compounds based on their relative solubilities in two different immiscible liquids usually water and an organic solvent.

Answer 29

Solvent Extraction

Question 30

Other term for Solvent Extraction

Answer 30

Liquid-Liquid Extraction

Question 31

Universal Solvent

Answer 31

Water

Question 32

It is a process where a solid is used to remove a soluble substance from an aqueous solution.

Answer 32

Adsorption

Question 33

It is a technique that separates substances on the basis of differences in the ability of substances to adhere to the solid surface.

Answer 33

Chromatography

Question 34

It must have both a number and a unit.

Answer 34

Measured Quantity

Question 35

It is the modern form of the metric system and the world's most widely used system of measurement.

Answer 35

SI Unit

Question 36

Full meaning of SI Unit

Answer 36

International System of Units

Question 37

Formula in getting Kelvin

Answer 37

K = C + 273

Question 38

Formula in getting Celsius

Answer 38

C = 5/9 (F - 32)

Question 39

Formula in getting Farenheit

Answer 39

F = 9/5 C +32

Question 40

Are obtained from counting or defined as a conversion factor

Answer 40

Exact Numbers

Question 41

Are derived from measurement. All measurements have some degree of uncertainty or error associated with the instrument used and is thus inexact.

Answer 41

Inexact numbers.

Question 42

It refers to how close a series of measurements are to one another.

Answer 42

Precision

Question 43

It refers to how well measured quantities agree with each other.

Answer 43

Precision

Question 44

It refers to how close a measured value is to an accepted value.

Answer 44

Accuracy

Question 45

It refers to how well measured quantities agree with the "true value"

Answer 45

Accuracy