Lab Apparatus

Question 1

Also known as a sample tube, a common piece of laboratory glassware consisting of a finger like length of glass or clear plastic tubing

Answer 1

Test tube

Question 2

Used to hold upright multiple test tubes at the same time.

Answer 2

Test tube rack

Question 3

Used for cleaning test tubes and narrow mouth laboratory glassware

Answer 3

Test tube brush

Question 4

Used to hold test tubes. Used to hold test tubes in place

Answer 4

Test tube holder

Question 5

Used as containers. These are only rough estimates of the liquid volume.

Answer 5

Beakers

Question 6

Often used as reaction vessels, particularly in titrations

Answer 6

Erlenmeyer flask

Question 7

Used to measure and store solutions with a high degree of accuracy.

Answer 7

Volumetric flask

Question 8

Used to transfer liquids with a moderate degree of accuracy

Answer 8

Graduated cylinder

Question 9

Transferring liquids with a fixed volume

Answer 9

Pipette

Question 10

These pipettes are made of plastics and disposable

Answer 10

Disposable pipettes

Question 11

A tube that is wide at the top and narrow at the bottom, used for guiding liquid into a small opening

Answer 11

Funnel

Question 12

A small dish shaped liked a cylinder

Answer 12

Petri dish

Question 13

Used to mixed chemicals and liquids for laboratory purposes. Made of solid glass like a straw

Answer 13

Stirring rod

Question 14

A semi-permeable paper barrier. Used to separate fine substances from liquids or air

Answer 14

Filter paper

Question 15

A circular concave piece of glass used as a surface to evaporate a liquid, to hold solids while being weighed, for heating a small amount of substance

Answer 15

Watch glass

Question 16

used since ancient times to prepare ingredients by crushing and grinding them

Answer 16

mortar and pestle

Question 17

contains a chemical that changes color as it touches with acid or base

Answer 17

LITMUS and pH PAPER

Question 18

in acid the blue litmus will turn?

Answer 18

red

Question 19

in base the red litmus will turn into?

Answer 19

blue

Question 20

in pH scale if the numbers are 0-7 what is it called?

Answer 20

acidic

Question 21

if the number in pH scale are from 7-14 what is it called?

Answer 21

alkaline

Question 22

what is the neutral number in pH scale?

Answer 22

7

Question 23

give 3 examples of laboratory techniques

Answer 23

cleaning glasswares, drying glasswares, heating a crucible, filtration, distillation, flame test, sublimation, reflux heating

Question 24

it is named for the 3 beams which carry weights

Answer 24

measuring mass

Question 25

highly sensitive lab instruments designed to accurately measure mass

Answer 25

measuring mass

Question 26

process where liquid is converted to a gaseous state through wind and air temperature changes

Answer 26

evaporation

Question 27

technique used to separate solids from liquids, the act of pouring mixture onto a filter paper that allows the passage of liquid.

Answer 27

filtration

Question 28

process that can be used to separate a pure liquid from a mixture of liquids

Answer 28

distillation

Question 29

refers to heating a solution with an attached condenser to prevent reagents from escaping

Answer 29

reflux heating

Question 30

used in the identification of certain metals. based on the observation that light emitted

Answer 30

flame test

Question 31

process of separation of liquid from solid and other non mixing liquids

Answer 31

decantation

Question 32

while heating the test tube you should ____?

Answer 32

cover the open end

Question 33

always add ___ slowly to acids

Answer 33

water

Question 34

distillation involves both?

Answer 34

evaporation and condensation

Question 35

the simplest filtration method

Answer 35

gravity filtration

Question 36

more accurate in measuring liquids than pipettes

Answer 36

graduated cylinders

Question 37

in measuring 0.012 g of sugar, it is more rational to use ___ than analytical balance

Answer 37

triple beam balance

Question 38

conducted in a luminous flame

Answer 38

flame test

Question 39

control the type of flame in bunsen burner

Answer 39

collar

Question 40

the measure of acidity and alkalinity of the solution

Answer 40

pH

Question 41

when red litmus paper turns blue it indicates that the solution is?

Answer 41

alkaline

Question 42

when blue litmus paper turns red it indicates that the solution is?

Answer 42

acidic

Question 43

the product formed during distillation process

Answer 43

filtrate

Question 44

in measuring clear or non-colored solutions what should you read?

Answer 44

upper meniscus

Question 45

when asked to determine the odor of chemicals you should?

Answer 45

sniff big amounts of fume

Question 46

uses a heat source and water bath

Answer 46

indirect evaporation

Question 47

observing proper and correct laboratory techniques is important in maintaining?

Answer 47

safety and attaining accurate results

Question 48

To raise the height of the flame for ease of use

Answer 48

Barrel

Question 49

To allow air to enter the burner

Answer 49

Air hole

Question 50

It is wide and heavy so that the burner is less likely to topple

Answer 50

Metal base

Question 51

To carry gas from the gas top

Answer 51

Gas hose

Question 52

The filtered substances that are left at filter paper are called?

Answer 52

residue