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Evidence of chemical change practice 2

Last updated over 4 years ago
32 questions
1

During a chemical reaction the temperature of the combined substance increases and a solid is formed.

1

what is your evidence ?

1

when a solution od sodium sulfide and cadmium notrate are mixed , a solid yellow percipitate is formed.

1

what is you evidence ?

1

During a chemical reaction one liquid settled at the bottom of the beaker and the other liquid rose to the top.

1

what is your evidence ?

1

During a chemical reaction a clear liquid settle at the bttom of the beaker and the other liquid rose to the top.

1

what is your evidence ?

1

Alka seltzer tablet produce bubbles.

1

what is your evidence

1

Candle wax melting

1

what is your evidence

1

food coloring dropped into water to give it color .

1

what is your evidence

1

paper caught fire

1

what is your evidence

1

power2 poweder 1 =amonia odor

1

what is your evidence

1

powdery substance dissolved in water

1

what is you evidence

1

During a chemical reaction , Temperature dropped dramatically after adding the liquid.

1

what is your evidence

1

two liquids combining and a solid form

1

what is your evidence

1

colorless gass+colorless gass____brown gas

1

what is your evidence

1

blue solution+zinc blue solution__zinc in clear solution

1

what is your evidence

1

mixing salt and pepper

1

what is your evidence

1

Baking soda absorb ydrochloric acid

1

what is your evidence