SE

Question 1

What is qualitative data?

Answer 1

Observations using sight, hearing, touch, smell, and taste. (Usually descriptive)

Question 2

What is quantitative data?

Answer 2

Numerical quantities which are typically measurements taken using instruments.

Question 3

If we burn/ scald ourselves touching a hot surface/ hot water

Answer 3

we will immediately place the affected area under running tap water and report the incident to my teacher.

Question 4

If we spill chemicals on our hands or splash chemicals into our eyes

Answer 4

we will immediately place the affected area under running tap water (for eyes, use the emergency eyewash) and report the incident to my teacher.

Question 5

Function of test tube

Answer 5

For holding small amounts of chemicals for heating and mixing liquids

Question 6

Function of beaker

Answer 6

For containing chemicals for heating and collecting and holding liquids

Question 7

Function of boiling tube

Answer 7

For containing chemicals for heating and collecting and holding of liquids

Question 8

Function of conical flask

Answer 8

For containing and mixing chemicals when heating is not required

Question 9

Function of round-bottomed flask

Answer 9

For containing chemicals when heating is required

Question 10

Function of evaporating dish

Answer 10

To evaporate off a liquid in a solution over a Bunsen burner

Question 11

Function of crucible

Answer 11

To hold small amounts of chemicals when heating at high temperatures. The lid prevents anything from escaping and keeps oxygen out of the reaction

Question 12

Function of measuring cylinder

Answer 12

To measure a volume of liquid accurately

Question 13

Function of displacement can

Answer 13

To collect water in a beaker to see how much water was displaced when an object is placed in it

Question 14

Function of filter funnel

Answer 14

For transferring liquids to containers with a small opening and separating solids from liquids using filter paper

Question 15

Function of retort stand

Answer 15

Support apparatus during an experiment

Question 16

Function of wire gauze

Answer 16

Support apparatus which cannot be heated directly with the flame of a Bunsen burner

Question 17

Function of a tripod stand

Answer 17

Support apparatus when heating

Question 18

What is a zero error

Answer 18

When an instrument gives a non-zero reading when the measured quantity should be zero

Question 19

What is a parallax error

Answer 19

When the marking on an instrument is viewed from the wrong angle

Question 20

What is a random/unpredictable error

Answer 20

Caused by unknown and unpredictable changes is the experiment resulting in imprecise measurements