3 years ago

How can you tell a chemical change has happened?

2 answers:

4 0

Answer:

How can I tell if a chemical reaction is occurring? A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change.

Explanation:

Kisachek [45]3 years ago

3 0

Answer:

You can tell when a chemical change has happened when the chemical changes in appearance such as color or physical state.

Explanation:

If a change happens it can change in any way shape or form.

You might be interested in

Choose the answer below that gives the correct chemical symbol and classification (metal, metalloid, or nonmetal) for the elemen

Zielflug [23.3K]

Answer: B. The element called tin is a metal with the chemical symbol Sn.

Explanation:

A is incorrect because Ni is Nickel, not Niobium.

C is incorrect because Carbon is a nonmetal and its symbol is C, not Cr.

D is incorrect because Copper's symbol is Cu, not Ce.

E is incorrect because As is the symbol for Arsenic, not Astatine.

6 0

3 years ago

Which reaction below occurs spontaneously upon mixing the reagents shown?

den301095 [7]

Co2 is correct buddy

3 0

3 years ago

HELP ASAP***

Alchen [17]

D...........................

8 0

4 years ago

Read 2 more answers

a student needs to use 0.575 moles of sodium chloride in an experiment. How many grams should he mass out?

Bad White [126]

The molecular weight of NaCl is 58.44 g/mol.

0.575 mol * 58.44 g/mol = 33.6 grams of NaCl

5 0

3 years ago

Of the 8 planets, why does the sun have the most gravitational attraction to Mercury?

ziro4ka [17]

Answer:

It is the closest sir.

Have an amazing day and enjoy. P.S Good luck!

Explanation:

4 0

3 years ago