1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Eva8 [605]
3 years ago
14

What are 3 signs that a chemical reaction is happening, what tells you that this is definitely a chemical reaction?

Chemistry
1 answer:
Charra [1.4K]3 years ago
8 0
Produces heat, putting off air or bubbles and changes the smell or odor it changes the state that’s how you know it is a chemical reaction
You might be interested in
In the front of the room, there is a bottle that contains a 32.00 g sample of sulfur. This is
Vera_Pavlovna [14]
6.02x10^23 atoms is the answer
8 0
3 years ago
The element Europium exists in nature as two isotopes: 151Eu, which has a mass of 150.9196amu, and 153Eu, which has a mass of 15
Juliette [100K]

Answer:151 Eu= 48.01%

152 Eu= 51.99%

Explanation:

4 0
3 years ago
If this atom has a balanced charge, how many protons would you expect to find in this atom?
uranmaximum [27]
The number of protons would be equivalent to the number of electrons if the net charge on the atom is 0.
6 0
3 years ago
Read 2 more answers
Using the table above, find the average atomic mass of the element. Then, using the periodic table, determine which element is s
lara [203]

Answer:

Chlorine

Explanation:

  • The abundance of chlorine-35 is 75% and the abundance of chlorine-37 is 25%.
  • Chlorine for example has two naturally occurring isotopes: Chlorine-35 and chlorine-37.
  • Chlorine's atomic mass is 35.453 u.
7 0
2 years ago
Read 2 more answers
Name each activity or observation as either physical or chemical change.
OLga [1]
<span>1) Boiling water for pasta-> physical
2) Digesting food -> chemical
3) Soda goes "flat" -> physical
4) Stretching a rubber band -> physical
5) Grilling a hamburger -> chemical
6) Adding sugar to tea -> physical
7) Adding lemon to tea -> physical
8) Mowing the grass -> physical
9) The smell of perfume "wafts" across the room -> physical
10) Candle wax melts -> physical
11) Breaking glass-> physical
12) Making cement-> chemical
13) Lighting a match-> chemical
14) Water is absorbed by a paper towel-> physical
15) Firefly glows in the dark-> chemical
16) Snow melts-> physical
17) Bleaching your hair-> chemical
18) Turning on a light bulb-> physical
19) Milk goes sour-> chemical
20) Shooting off fireworks-> chemical</span>
8 0
3 years ago
Other questions:
  • If you drop a piece of quartz, it will break apart I an irregular manner. which property does quartz show in this situation
    8·2 answers
  • Classify its reaction type: 2Al(s) + 2CuSO4(aq) ⟶ Al2(SO4)2 + 2Cu
    10·1 answer
  • If the mass is 6.5g, and the volume is 25mL.. what is the density? PLEASE ANSWER ASAP
    15·1 answer
  • At a certain temperature, iron (II) oxide, FeO, can react with carbon monoxide, CO, to form elemental iron, Fe, and carbon dioxi
    7·1 answer
  • A mole is __<br> - objects.<br> Answer here
    5·1 answer
  • If you have 3.48 x 1023 formula units of Lead (II) Permanganate, what is its mass?
    10·1 answer
  • 3. Give an example of how carbon is transferred frem being in a living to a non-living<br> organism.
    12·1 answer
  • At a high elevation, there is little chance of... a) flooding b)lack of oxygen c) getting dizzy​
    8·1 answer
  • A 3 L pocket of air at sea level has a pressure of 100 atm. Suppose the air pockets rise in the atmosphere to a certain height a
    10·1 answer
  • 14. What volume (mL) of water do I need to add to 425
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!