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4 years ago

Ideas of the atom have changed over time.

2 answers:

8 0

The idea about the atom which has now been dropped off as inaccurate by the scientist is the idea of the atom to be a solid material.

Answer: Option D

Explanation:

From Rutherford Alpha Ray scattering Experiment, most of the atom spaces are empty because the alpha particles are not deviated by positive charge of nucleus. This leads to the conclusion that atoms cannot be considered as perfect solid sphere.

Apart from the last option, all other options are still found to be accurate. That is, electrons are found in layers which are known as the electron shells. The electrons do have the negative charge which is neutralized by the positive charge of the nucleus. And nucleus is present in the center.

Lunna [17]4 years ago

7 0

An atom is solid material

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Which of the following is occurring while a satellite is in orbit around Earth? O It is continuously pulling away from Earth It

hoa [83]

AnswerIt is continuously falling towards the surface of the earth

Explanation:

since gravity from earth is the thing that keeps it constantly in orbit

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3 years ago

A study where you try to observe subjects in a natural environment is a(n)

Aleksandr [31]

Answer:

i think it Naturalistic observation

Explanation:

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4 years ago

If you drop a bouncing ball from a height of 40 centimeters, explain why it can only bounce back up to a height of less than 40

iren2701 [21]

Answer:

Due to energy loss while collision ball will not reach to same height while if there is no energy loss then in that case ball will reach to same height

Explanation:

As we know that initially ball is held at height h = 40 cm

So here we can say that kinetic energy of the ball is zero and potential energy is given as

$U = mgH$

now when strike with the ground then its its fraction of kinetic energy is lost in form of other energies

So the ball will left rebound with smaller energy and hence it will reach to height less than the initial height

While if we assume that there is no energy loss during collision then in that case ball will reach to same height again

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3 years ago

Akeem is walking on the beach on a hot summer day.

creativ13 [48]

Answer:

Sand in a beach is warmer than the water of the sea.

Explanation:

Water absorbs less heat from the sun when compared with sand. Sand is darker and also is less reflective. Because of its darker nature, absorption of heat from the sun will be more. Due to its less reflective nature the sand wouldn’t be able to reflect off the sunlight.

But water is highly reflective and can reflect off a major portion of the sunlight falling on the sea. The sea is also deep and thus the heat spreads through a large volume unlike in the case of sand. Water also has the nature of constant movement unlike sand which is stable.

This factor also heats up sand more than water. 

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3 years ago

How did the study of the atom contribute to our understanding of the periodic table of the elements? (1 point) Atoms are represe

Dvinal [7]

The study of the atom contribute d to our understanding of the periodic table of the elements by virtue of the following;

Elements are made of atoms, so understanding atoms provided information about elements, which led to the organization of the periodic table

Experiments that identified characteristics of atoms provided scientists with atomic weights and atomic numbers, which were used to organize the periodic table.

As we know; the periodic table is an array of elements in order of their atomic number.

In which case, the periodic table is made up of 7 rows otherwise called Periods and 8 columns otherwise called Groups.