Test Help

Question 1

Wax when heated over a Bunsen burner.

Answer 1

Before- Pale yellow solid lump
During- Melts to an off white liquid
After- Solidifies back into a pale yellow solid lump

Question 2

Iodine when heated over a Bunsen Burner

Answer 2

Before-silvery grey solid beads
During-Violet purple gas
After- Shiny grey solid with crystals at the top of the test tube

Question 3

Copper Carbinate when heated over a Bunsen burner

Answer 3

Before- Green solid powder
During- black solid powder
After- Remained Black solid powder when cooled

Question 4

Before- Green solid powder
During- black solid powder
After- Remained Black solid powder when cooled

Answer 4

Copper Carbinate

Question 5

Before- Pale yellow solid lump
During- Melts to an off white liquid
After- Solidifies back into a pale yellow solid lump

Answer 5

Wax

Question 6

Magnesium when heated over a Bunsen burner

Answer 6

Before- Sivery grey solid ribbon
During- Orange tip burnt with a white bright light
After- White solid powder (looked like chalk)

Question 7

What are the main states of matter?

Answer 7

Solid, Liquid, gas

Question 8

When the air hole is fully open the flame is…?

Answer 8

Bright inner cone, pale lilac outer cone, roaring sound and a steady flame.

Question 9

How do you get the safety flame?

Answer 9

Having the collar over the air hole half to make a orange steady tip with the blue cone.

Question 10

Air hole fully closed?

Answer 10

Flame is luminous orange silent and flickering *like a candle.

C(losed) - the C stands for candle *because it looks like a flickering candle

Question 11

LEARN THE HEALTH SYMBOLS!!

Answer 11

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