Which atomic model was proposed as a result of J. J. Thomson’s work?

Answers

Answer 1

Answer: J.J. Thomson discovered the electron by experimenting with a Crookes, or cathode ray, tube. He demonstrated that cathode rays were negatively charged. He then proposed the Plum Pudding Model.

Answer 2

Answer: The atomic model was proposed as a result of J. J. Thomson’s work was the plum pudding model.

Hope I helped : )

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Which of the following describes the Bohr atomic model?A. Protons, neutrons, and electrons orbit around each other in set paths.B. The nucleus contains protons and neutrons and is orbited by electrons.C. Protons, neutrons, and electrons occupy the same spaces within the atom.D. Protons occupy the center of an atom, with neutrons and electrons circling.

In science what is acid

Answers

In science, an acid is a chemical substance that has a pH value less than 7. It is characterized by the presence of hydrogen ions (H+) when dissolved in water. Acids can donate protons or accept electrons during chemical reactions. They have sour taste, can corrode certain metals, and can turn blue litmus paper red.

Which elements form are ionic compounds check all the boxes that apply

Answers

Any type of metal may join with a non-metal, such as carbon, nitrogen, oxygen, sulfur, phosphorus, and selenium, to create ionic compounds.

What is an ionic compound ?

A chemical compound known as an ionic compound is one that contains ions bound together by the electrostatic forces known as ionic bonding. Despite having both positively and negatively charged ions, or cations and anions, the molecule is generally neutral.

In most cases, ionic compounds are created between metal and nonmetal components. For instance, the ionic compound calcium chloride is made up of the metal calcium (Ca) and the nonmetal chlorine (Cl) (CaCl2).

A nonmetal and a metal can create an ionic bond, which is the attraction between two ions with opposing charges.

Thus, metal are joined with a non-metal, such as carbon, nitrogen, oxygen, sulfur, phosphorus, and selenium, to create ionic compounds.

To learn more about ionic compound, follow the link;

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Answer/Explanation:

Aluminum and oxygen

Fluorine and oxygen

Ionic compounds are formed when any type of metal is combined with a non-metal such as carbon, nitrogen, oxygen, sulfur, phosphorus, and selenium.

(any)metal + nonmetal = ionic compound

How many elements are there

Answers

There are 118 known elements

The temperature at the point of intercept of the plotted data with the Temperature axis is:600°C
-273°C
-160°C
50°C

Answers

Answer: The temperature at the point of intercept is -273°C.

Explanation: Intercept is a point on a graph which crosses the x and y axes.

Here, The X-axis represents Temperature in °C and Y-axis represents the Volume in mL.

On X-axis, the major division is 100 and minor division is 10. The slope intercepts the X-axis at third minor division from the origin. Hence, the temperature of intercept corresponds to -273°C.

An axis is a line of numbers in a graph. The intercept is where a line of data and axis intersect, which if you look at the purple line and the temp. axis, is around -273 C.

Which of the following pieces of laboratory equipment is not directly used to make measurements?a. test tube
b. graduated cylinder
c. ruler
d. thermometer

Answers

Test are not directly used to make measurements, I mean you could use them to put 4 mL of a substance in, but not to measure out 4 mL, like with graduated cylinders. Rulers can be used to measure the length of something, like the number of inches. And a thermometer will help you measure the temperature of something.

Answer:

A. test tube

Explanation:

edg 2022

How does litmus paper identify a base?A base turns red litmus blue.
A base turns blue litmus red.
A base turns orange litmus red.
A base turns yellow litmus blue.

Answers

Answer;

A base turns red litmus blue.

Explanation;

Litmus paper is an acid/base indicator that changes color to identify bases and acids.

Red litmus paper is used in chemical laboratories to identify bases. A base is a substance that accepts hydrogen ions (H+) in water. The color of a red litmus paper remains the same under acidic conditions and turns blue under basic conditions.

Blue litmus paper turns red under acidic conditions and remains the same under basic conditions. An acid is a substance that releases hydrogen ions in an aqueous solution. Blue litmus paper is prepared by treating plain paper with lichen-blue litmus. Blue litmus paper is typically used to test acids, such as sulphuric acid, hydrochloric acid, nitric acid, ethanoic acid, citric acid, and vinegar.

Answer:

Your answer is A

Explanation:

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