2 years ago

Write a description of how you know a chemical reaction is occurring.

Chemistry

1 answer:

Sladkaya [172]2 years ago

4 0

Answer:

See explanation

Explanation:

Chemical reactions are also referred to as chemical change. A chemical change often leads to the formation of new substances and is not easily reversible.

A chemical reaction may be accompanied by the emission of heat and light, formation of a precipitate, evolution of gas, or a color change.

These observable physical effects may tell us weather a chemical reaction has taken place or not so we have to observe the system closely for any of these effects stated above.

You might be interested in

How many moles are in 2.8 g of Mg?

larisa86 [58]

Answer:

2.8 mg ≈ 0.12 mol

6 0

2 years ago

I need help pls Where does it belong to?

Daniel [21]

The answer is B. Fungi,Protists

6 0

1 year ago

Classify each of the following as energy primarily transferred as HEAT or energy primarily transferred as WORK.

IgorLugansk [536]

number 1 is work number 2 is heat

6 0

2 years ago

What is the most important use of an elements atomic number

Setler [38]

Answer:

Atoms of each element contain a characteristic number of protons and electrons. The number of protons determines an element's atomic number and is used to distinguish one element from another.

8 0

2 years ago

PLEASE HELP THIS IS FOR A TEST REVIEW

Leya [2.2K]

Answer:

Matter is anything that has mass and takes up space. Matter can change form through physical and chemical changes, but through any of these changes, matter is conserved. The same amount of matter exists before and after the change none is created or destroyed.

mark me brainlest

7 0

2 years ago