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
Elena L [17]
3 years ago
7

What observations led to the periodic law? what observations led to the periodic law? observation that certain elements possess

such property as radioactivity observation that the all halogen elements have similar properties observation that the all metals have similar properties observation that the properties of elements recur and certain elements have similar properties?
Chemistry
1 answer:
kvv77 [185]3 years ago
7 0
HISTORICAL INTRODUCTION.1<span> EVER since the establishment of the atomic theory by Dalton and Berzelius it was felt among chemists that there must be some relation between the atomic weights of the different elements and their properties. It was recognized very early that there exist groups of elements possessing related chemical and physical properties, and one of the earliest attempts to bring out this point is due to Dobereiner. In 1829 he tried to show that “many elements may be arranged in groups ()f three, in each of which the middle element has an atomic weight equal or approximately equal to the mean of the atomic weights of the two extremes.” As illustrations of this method of arrangement may be mentioned the following groups: Li, Na, K; Ca,Sr,</span>
You might be interested in
Think of a situation where "particle motion" is a blessing in disguise for the entire humanity.
valkas [14]
The concept of particle motion, not just a "blessing in disguise" but a significant concept in which humanity must learn about. The theory of particle motion simply states that "the particles which comprise matter, are constantly moving." For example in the application of aerosol sprays, particle motion is important because the aerosol particles would constantly disperse instead of being in a single position.
8 0
3 years ago
If you have 5 unknowns and they were secondary alcohol aldehyde, carboxylic acid, amine, and alkane Put plan to identify the unk
Finger [1]

Answer:

the unknowns

Explanation:

7 0
2 years ago
You compare two layers to a because the crust and upper mantle are solid
balandron [24]
On the earth there is the top layer dirt then loam comes next
6 0
3 years ago
What test was used to identify hydrogen gas? Write a balanced equation to represent the test?
const2013 [10]
Burning splint test
2H2 (g) + O2 (g) -> 2H20 (g) + heat
It’s a combustion reaction
6 0
3 years ago
What is the volume, in liters, of 4.00 moles of methane gas, CH4, at 13 ∘C and 1.20 atm?
dimulka [17.4K]

Answer:

78.268L

Signifigant figures = 78L

6 0
3 years ago
Other questions:
  • Someone help me please please someone
    15·1 answer
  • How many moles are in 74 g KI?
    12·1 answer
  • What tells the elements and ratio of atoms in a compound?
    6·1 answer
  • 24897Bk ---&gt; 24797Bk + 10n + _____
    5·1 answer
  • B. Add 3 mL of copper (II) sulfate (CuSO.) solution to a test tube. Drop a cleaned zinc strip into the solution. Permit the stri
    6·1 answer
  • PLEASE HELP MEEE!!!!!!!!!
    14·1 answer
  • Does an object that feels cold to the touch contain thermal energy? explain your answer.
    13·1 answer
  • True or false: Heterotrophs need to go find and eat food.?<br><br><br> :FALSE<br><br> :TRUE
    10·1 answer
  • Difference between desirable changes and undesirable changes​
    8·1 answer
  • C₃H₈ (g) + 5O₂ (g) --&gt; 3CO₂ (g) + 4H₂O (l) would be best classified as which type of reaction?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!