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
Evgen [1.6K]
3 years ago
5

Why do scientists look for patterns in the world?

Chemistry
2 answers:
White raven [17]3 years ago
4 0
So they can predict what happens next
Nostrana [21]3 years ago
3 0

Patterns can help explain observation

Explanation:

A P E x

You might be interested in
If silicon has a charge of +4 and oxygen has a charge of -2, what is the total charge on this structure?
Ratling [72]

Answer:

Zero with the subscripts, +2 without them.

Explanation:

Hello!

In this case, since we consider that two silicon are bonded with four oxygen atoms to form silicon oxide according to the following chemical equation:

Si^{4+}+O^{2-}\rightarrow Si_2O_4

It is also possible to realize it can be simplified to obtain:

SiO_2

Which means that the total charge with the subscripts is zero, and without the subscripts +2 (+4-2).

Best regards!

7 0
3 years ago
Match the letters with the correct part of the flower
shepuryov [24]
Here is a photo to help you out.  

3 0
3 years ago
Water evaporating from a puddle is an example of a
Flauer [41]
It is an example of physical change. The molecules are not changing, so it is not chemical, and a physical property is something that a physical thing has.


5 0
4 years ago
Read 2 more answers
Which describe a molecules (select all that apply)a) It can be two or more of the same elements combine together.b) It can be th
kenny6666 [7]

combinedAnswer

It can be two or more of the same elements combine together

It can be two or more different elements combined

Step-by-step explanation:

A molecule is a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

A molecule can also be two or more different elements combined.

7 0
2 years ago
Hydrogen peroxide decomposes in presence of manganese (iv) oxide to give oxygen gas i). Draw a labelled diagram to show the volu
Effectus [21]

Answer:

Oxygen can be made from hydrogen peroxide, which decomposes slowly to form water and oxygen:

hydrogen peroxide → water + oxygen

2H2O2(aq) → 2H2O(l) + O2(g)

The rate of reaction can be increased using a catalyst, manganese(IV) oxide. When manganese(IV) oxide is added to hydrogen peroxide, bubbles of oxygen are given off.

Apparatus arranged to measure the volume of gas in a reaction. Reaction mixture is in a flask and gas travels out through a pipe in the top and down into a trough of water. It then bubbles up through a beehive shelf into an upturned glass jar filled with water. The gas collects at the top of the jar, forcing water out into the trough below.

To make oxygen in the laboratory, hydrogen peroxide is poured into a conical flask containing some manganese(IV) oxide. The gas produced is collected in an upside-down gas jar filled with water. As the oxygen collects in the top of the gas jar, it pushes the water out.

Instead of the gas jar and water bath, a gas syringe could be used to collect the oxygen

6 0
2 years ago
Other questions:
  • What are the 3 types of catalyst?
    10·1 answer
  • Why is mass conserved in a chemical change?
    14·1 answer
  • What is the number of waves that go by in a certain amount of time
    15·1 answer
  • What would the mass be, in grams, of 0.89 moles of Cl2?
    9·1 answer
  • A 2.67 g piece of zinc (density = 7.14 g/mL) is added to a graduated cylinder that contains 12.13 mL H 2 O . What will be the fi
    9·1 answer
  • Question 14
    9·2 answers
  • How many atoms are in 162.0 g of magnesium? ​
    14·1 answer
  • What is the effect of adding more water to the following reaction at equilibrium? CO2 + H2O H.CO.
    14·1 answer
  • Which reaction is the opposite of a decomposition reaction?
    15·1 answer
  • What might happen if the strong force didn’t exist
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!