Evidence of chemical change practice 2

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

what is your evidence ?

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

what is you evidence ?

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

what is your evidence ?

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

what is your evidence ?

Alka seltzer tablet produce bubbles.

what is your evidence

Candle wax melting

what is your evidence

food coloring dropped into water to give it color .

what is your evidence

paper caught fire

what is your evidence

power2 poweder 1 =amonia odor

what is your evidence

powdery substance dissolved in water

what is you evidence

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

what is your evidence

two liquids combining and a solid form

what is your evidence

colorless gass+colorless gass____brown gas

what is your evidence

blue solution+zinc blue solution__zinc in clear solution

what is your evidence

mixing salt and pepper

what is your evidence

Baking soda absorb ydrochloric acid

what is your evidence