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
Nonamiya [84]
3 years ago
10

What is the BEST way to determine if a chemical change has occurred?

Chemistry
1 answer:
Yuri [45]3 years ago
7 0

Answer:

2. examine the properties before and after the change

You might be interested in
If a players natural resistance to an unbalanced force is called
jonny [76]

Answer:

Explanation:

i don't know if this is 100% correct but i think it's inertia

7 0
2 years ago
What is the atomic number for an element whose mass number is 78,
Ann [662]

Answer:

protons = atomic numbermass number = protons + neutronsatomic number = mass number - neutrons = 78-38 = 40

Explanation:

5 0
2 years ago
Read 2 more answers
Which rock would be the best source of the mineral garnet?
n200080 [17]
(4) slate because it is the strongest
5 0
3 years ago
Read 2 more answers
The by-product of the chlorination of an alkane is​
Elanso [62]

The by-product of the chlorination of an alkane is​  <u>HCl</u>

Explanation:

  • Chlorination is the process of adding chlorine to drinking water to disinfect it and kill germs. Different processes can be used to achieve safe levels of chlorine in drinking water.
  • Chlorination of alkane gives a mixture of different products.
  • When consider mechanism of alkanes chlorination, free radicals are formed during the reaction to keep the continuous reaction.
  • Different alkyl chloride compounds, extended carbon chains compounds and HCl are formed as products in product mixture.
  • Chlorination byproducts, their toxicodynamics and removal from drinking water.
  • Halogenated trihalomethanes (THMs) and haloacetic acids (HAAs) are two major classes of disinfection byproducts (DBPs) commonly found in waters disinfected with chlorine
  • Chlorine is available as compressed elemental gas, sodium hypochlorite solution (NaOCl) or solid calcium hypochlorite (Ca(OCl)2
7 0
3 years ago
Write a chemical equation of Dr. Jeff’s demonstration using a battery to light steel wool on fire. The battery is used to allow
Elis [28]

Answer:

2Fe(s) + 3O2(g) --------> 2FeO3(s)

Explanation:

According to the question, a  battery was used  to light the steel wool by bringing the terminals very close together. When  the battery came into contact with the steel wool, current was sent out through the thin wire.  This caused the iron to heat up quite well.

Iron reacts with oxygen under these conditions as follows;

2Fe(s) + 3O2(g) --------> 2FeO3(s)

This is the chemical reaction that occurs when the steel wool is set on fire.

6 0
3 years ago
Other questions:
  • How much heat is absorbed by a 56g iron skillet when its temperature rises from 15oC to 27oC?
    12·1 answer
  • Need help quick! 10 points for correct answer :)
    5·2 answers
  • How can people reduce respiratory Diseases &amp; Accidents?
    8·1 answer
  • A contains 2.60g of impure h2so4 in 5oocm³ of a solution 5.30g of na2co3 in 1.00dm³ of solution
    13·1 answer
  • What describes the current model of the atom? A)That electrons and protons move randomly around a nucleus.
    8·1 answer
  • Please help me with some extra details please
    13·1 answer
  • Peyote has effects similar to those of __________, but with different types of hallucinations.
    7·1 answer
  • A process by which cells change the structure and become capable of caring out specialized functions is?
    6·2 answers
  • Which of the following would be considered renewable resources? You may choose more than one.
    8·2 answers
  • Someone please help me figure out the significant figure
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!