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Skills for exam/test 2023 > Bunsen Burner > Flashcards

Bunsen Burner Flashcards

1
Q

Does the air-hole have to be open or closed when lit?

A

Closed.. The air hole must be closed before you attempt to light the burner.

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2
Q

What is the hottest part of the flame in the bunsen burner?

A

It is just above the tip of the primary flame/ blue flame.

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3
Q

What colour flame is seen when the air-hole is closed

A

Yellow

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4
Q

What colour flame is seen when the air-hole is open?

A

Blue

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5
Q

What is the cooler part of the flame in the bunsen burner?

A

The coolest part of the flame is the middle zone/yellow part, except the tip

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6
Q

When putting a beaker on top of the bunsen burner what should you do step by step?

A
  1. Tripod on top of bunsen burner, 2. put gauze mat on top of tripod, 3. put beaker on the gauze mat.
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7
Q

Should you strike the match before turning the gas tap on?

A

Yes.

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8
Q

What is the yellow flame called?

A

Safety flame.

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9
Q

What is the blue flame called?

A

Heating flame.

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10
Q

The independent variable is..

A

What I change!

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11
Q

What is a dependent variable?

A

The variable is what i measure during my experiment.

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12
Q

What is a controlled variable?

A

A control variable is an element that is kept the same throughout the experiment in order to assess the relationship between multiple variables

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13
Q

What is a beaker used for.

A

holding liquids

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14
Q

What is a pipette used for

A

To transport a measured volume of liquid.

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15
Q

What is a spring scale used for?

A

to measure the weight of an object

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16
Q

what is a thermometer used for?

A

measures temperature

17
Q

What is a gauze mat used for?

A

to support a container (such as a beaker or an Erlenmeyer flask) while it is being heated

18
Q

What is the crucible tongs used for?

A

to lift a hot crucible from a furnace or for other items which cannot be handled with bare hands

19
Q

What is a funnel used for?

A

To channel liquids or fine-grained substances into containers with a small opening

20
Q

What is microscope slide used for?

A

to act as the support for a sample or specimen which needs to be examined under a microscope

21
Q

What are the 5 principles of microscope?

A

magnification, resolution, numerical aperture, illumination, and focusing.

22
Q
A

Photometrics
This means that microscopes need to contain a light source, mirrors and lenses to direct the light through a sample, an area for the sample to sit, an eyepiece for users to view the sample through, pathways for cameras to view the sample, and adjustment knobs for focus, alignment, and much more.

Skills for exam/test 2023 (1 decks)

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