Scientific Instruments + Basic Variables

Question 1

Define independent variable

Answer 1

Independent variable that is changed

Question 2

Define dependent variable

Answer 2

Variable to measure that relies on independent variable (whats measured)

Question 3

Define controlled variable

Answer 3

What does not change

Question 4

Hypothesis

Answer 4

Relationship between iv and dv

Question 5

Parallax error

Answer 5

Marking on instrument is viewed from wrong angle

Question 6

Zero error

Answer 6

Electronic balance, tare or zero function

Question 7

Luminous flames (bunsen burner)

Answer 7

Luminous
Air hole is closed
Orange/yellowish flame
Unsteady flame
Blue
Less hot

Question 8

Non-luminous flame

Answer 8

Air hole is open
Dark blue, pale blue
Hotter
Steady flame

Question 9

Bunsen burner precaution

Answer 9

Air hole closed before lighting bunsen burner to prevent too much oxygen from entering burner. This prevents strike back, in which flame burns within barrel