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e-lub [12.9K]
3 years ago
6

Henri Becquerel and the Curies are famous for discovering that the atom is not indivisible, a belief held since the time of the

Greek philosophers.
True
False
Chemistry
2 answers:
Sphinxa [80]3 years ago
7 0

Answer:

The statement "Henri Becquerel and the Curies are famous for discovering that the atom is not indivisible, a belief held since the time of the Greek philosophers." is <u>true</u>.

Explanation:

Henri Becquerel, Pierre and Marie Curie were three French physicists that in the year 1903 received the Nobel Prize of Physics due to their research and discoveries regarding radioactivity. Becquerel was the first person to discovered, in the year 1896 that atoms were neither indivisible nor mutable, discovery that challenged the previously constituted ideas on atomic structure. Pierre and Marie Curie were the first two people in working with radioactivity and discovering the atomic elements radium and polonium during a research in 1898. All of these physicists worked around the same time with radioactivity and researching the atomic theory, giving new perspectives to the subject.

Rainbow [258]3 years ago
3 0
Henri Becquerel discovered radioactivity and it was the Curies who made experiments about the concept and became known for their d
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What is neutralisation??​
frosja888 [35]

Answer:

Acid + Base -------> Salt + Water

Explanation:

The reaction between an acid and bases is called a neutralization reaction. The result of the reaction is salt and water. For example, when hydrochloric acid(acid) and sodium hydroxide(base) react they form sodium chloride(salt) and water. Also, heat is evolved.

Example:

HCl + NaOH ----------> NaCl + H2O

HCl is hydrochloric acid.

NaOH is sodium hydroxide which is a base.

NaCl is sodium chloride which is a salt.

H2O is water.

8 0
2 years ago
What happens to carbon in plants when the plants die.
Korvikt [17]

Answer:

Released into the atmosphere

Explanation:

The carbon that the plant had been storing when it was alive, would be released upon death into the soil

4 0
2 years ago
WILL GIVE BRAINLIEST
Marianna [84]
Answer:

B, C, and D

Explanation:

A is the only one in which two components are being combined. The point is to separate the mixture, so that is the only one that would not apply.
7 0
3 years ago
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negative charge is electron

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4 0
3 years ago
For each of the following sets of elements, circle the element expected to be most electronegative and draw a box which is expec
Evgen [1.6K]

Answer: The element expected to be most electronegative is Ca.

The element expected to be least electronegative is K.

Explanation:

Electronegativity is defined as the property of an element to attract a shared pair of electron towards itself.

Down the group:

The size of an atom increases as we move down the group because a new shell is added and electron gets added up.

As, the size of an element increases, the valence electrons gets away from the nucleus. So, the attraction between the nucleus and the shared pair of electrons decreases

Hence, electronegativity decreases moving from top to bottom down a group

Across a period:

The size of an atom decreases as we move across the period because the electrons get added to the same shell and the nuclear charge keeps on increasing. Thus the electrons get more tightly held by the nucleus.

As, the size of an element decreases, the valence electrons come near to the nucleus. So, the attraction between the nucleus and the shared pair of electrons increases.

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Thus as K, Sc and Ca are arranged across a period, the electronegativity order is K< Sc < Ca.

7 0
3 years ago
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