reynbabies2 reynbabies2

03-11-2021
Chemistry

contestada

How can you identify gas in a chemical reaction without observing the atoms or molecules?

Respuesta :

sarahjeylani90 sarahjeylani90

03-11-2021

Answer:

There are five signs of a chemical change:

Colour Change.

Production of an odour.

Change of Temperature.

Evolution of a gas (formation of bubbles)

Precipitate (formation of a solid).

Answer Link

Otras preguntas

PLEASE HELP I NEED IT BY TODAY I WILL GIVE YOU 44 POINT AND BRAINLEST

Kara is running a marathon. After 2 hours, Kara has run 13 miles. After 4 hours, Kara has run 26 miles. What is her speed, in miles per hour?

This acceleration function represents the acceleration of a subatomic particle: a(t) = 6t² - 8t The particle has an initial velocity of 1 m/s. What is the veloc

Suppose D(T) = A(T-H)2 +K represents the hieght of an object in feet after T seconds. Suppose an object has a maximum height of 12 feet after 2 seconds. This sa

Question for Math! I have a 200-point math test coming up, and I don't get the concept of this question, but if somebody is willing to help me out on this quest

A car starts from rest and travels for 4.0s with a uniform acceleration of + 1.3m/s^2. The driver then applies the brakes, causing a uniform acceleration of - 1

Question for Math! I have a 200-point math test coming up, and I don't get the concept of this question, but if somebody is willing to help me out on this quest

From earth why dose the sun look so much larger than other stars ? Is the sun actually larger than the stars outside our solar system ? Explain your ideals belo

1.08 to the 3rd power?

A triangle has sides of length 4xy, 7, and2x. Which expression represents the distance around, or perimeter, of the triangle? O 6z+y+7 O 6x + 4y +7 O4zy + 2x +7