Much of the evidence for the existence of atoms comes from Multiple Choice chemistry. mechanics. biology. thermodynamics.

Q: 1. What is atomism? 2.  What is alchemy? 3. What is protoscience and pseudoscience? 4.What is atomic…

A: Social atomism also called as atomism can be defined as the notation given by scientist for atomic…

Q: List the name and the atomic number of each element. (a) Mn(b) Ag(c) Au(d) Pb(e) S

A: In the periodic table, elements are arranged based on their similarities in properties. Each element…

Q: Atoms are mostly empty space.  True  False

A:

Q: This experiment concerns kinetics and isotopes. Isotopes are atoms of an element that differ only in…

A: Radioactivity : It is the decay process by which atomic nuclei undergoes nuclear changes by loss of…

Q: Change 1 Change 2 Change 3 Change 1 is: Change 2 is: Change 3 is: impossible impossible impossible a…

A: Applying definition of physical and chemical changes. A change which provides new matter is chemical…

Q: Tides are caused mainly by O Wind O The gravity of the Moon O Magnetic fields O Storms

A: The rise and fall of the water level of the sea are known as tides.

Q: 5. For scientists who are looking for life in outer space, what substances should they look for and…

A: As you already mentioned in the question that you want answer only question number-5 -…

Q: 4. What is the definition of thermal chemistry? The study of change that involves temperature The…

A: Thermal chemistry is associated with quantity of heat involve in a chemical reaction.

Q: can you take a look at two elements located into different corners of the Periodic Table - Lithium…

A: An atom is composed of three main sub-atomic particles; electrons, neutrons and protons. The atomic…

Q: What do you mean by SAR? why it is important in Medicinal chemistry?

A: SAR implies a Surface Activity Relationship. This relationship is between the chemical structure of…

Q: 8 S and S8

A:

Q: What is the plum pudding model and what did it discover?

A: Interpretation :  We have to tell what is plum pudding model and about its discovery.

Q: 1. Atomic Structure. 106 a) 46 Pd*2 b) 232 92 U

A:

Q: Consider helium and argon gases. a.Why do helium-filled balloons rise? Justify your answer using a…

A: (a) Helium balloons also work by the law of buoyancy. ... The helium balloon displaces an amount of…

Q: Who designed the periodic table?

A: Periodic table is invented to arrange various elements so that one can get a clear and easy idea of…

Q: (A) n=3,7=2 (B)n=42=3

A: ml is the magnetic quantum number. Magnetic quantum number represents the orbitals.  Possible values…

Q: Give the noble gas shorthand notation (ex: [He] 2s2 2p1) for U+2

A:

Q: Ultraviolet light rays can be harmful and helpful to humans. O True O False

A: The Ultraviolet light is high energy radiation having energy greater than visible light.

Q: Cite 3 scientists whose works were mostly on the development of the periodic table. Give a short…

A: The arrangement of the elements in rows and column on the basis of their atomic number is termed as…

Q: Compare the amount of copper predicted in part A with the amount measured in part B. What percentage…

A: Predicted copper amount=0.9918 Actual amount of copper produced= 0.72

Q: The fact that the C atom can form compounds like CH4, C2H5O, H2C=CH2, HC≡CH, etc., demonstrates…

A: To find: The fact that the C atom can form compounds like CH4, C2H5O, H2C=CH2, HC≡CH, etc.,…

Q: There are four sketches below. The first sketch shows a sample of Substance X. The three sketches…

A: Answer:- This question is answered by using the simple concept of physical change and the chemical…

Q: Why is carbon considered the element of Life? What makes carbon unique? Can you think of something…

A: Given statements,    Carbon considered the element of Life    Unique property of Carbon    Something…

Q: Sample of Substance X Change 1 Change 2 Change 3 Change 1 is: Change 2 is: Change 3 is: O impossible…

A: Physical changes are those changes in which only Physical state of matter change, while their…

Q: how are the different colors produced including specific examples. Topic: fireworks

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: How does the study of chemistry relate to other areas of study in science?

A: Chemistry is that branch of science which deals with the chemical nature of substances such as their…

Q: Fill in the blanks: Choose the correct answer from the given choices:

A: Solute: It is the substance that is getting dissolved in a particular liquid called the solvent.…

Q: The behavior of matter is determined by the properties of molecules and atoms. True or false?

A: Everything surrounding the molecule is a matter. It is made up of atoms and molecules. It has mass…

Q: 5) Elements in the last column of the periodic table are called, 6) What distinguishes one element…

A: 5. Elements in the last column of the periodic are called Noble gases 6. The atoms of the element .…

Q: explain how the development of the Atomic Theory illustrates the Nature of Science. Support your…

A: It is asked to explain the development of atomic theory illustrating the nature of Science.

Q: The normal process occurring on Earth that warms its surface and the lower atmosphere is called A.…

A: The correct option is (D.) the green house effect .

Q: The vitamin niacin (nicotinic acid,C6H5NO2) can be isolated from a variety of natural sources such…

A:

Q: The vast majority of the ISM, both by volume and by mass, is made up of this element, found at many…

A: ISM means Interstellar medium. It consist of matter and radiation that exist between the spaces of…

Q: There are four sketches below. The first sketch shows a sample of Substance X. The three sketches…

A: Chemical change: The process in which the molecular composition is completely changed, and a new…

Q: Sample of Substance X Change 1 Change 2 Change 3 Change 1 is: Change 2 is: Change 3 is: O impossible…

A: Physical change is defined as the one in which the form/state of the particle changes but their…

Q: 1. Brz 24. 2. NaOEŁ zequiv. Br Br A. B. D. Bv Br Br

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: How many electrons can have n = 50, l = 2. [Write your answer as a number.

A:

Q: What did the scientists who are credited with discovering the proton and neutron have in common?

A: Solution Ernest Rutherford determined that his scintillation detectors detected gas nuclei once a…

Q: What are Dalton’s Theories? Which ones have been disproven and which ones are still true?

A: Dalton’ theory defined the atoms as the maker of every matter present around us.

Q: Which pair of elements would you expect to exhibit the greatest similarity in their physical and…

A: The properties of elements are dependent over their electronic distribution. The similarity in the…

Q: Is Ni and Cu  Different elements, isotopes or ions?

A: Isotopes: Each of two or more forms of the same element that contain equal numbers of protons but…

Q: There are four sketches below. The first sketch shows a sample of Substance X. The three sketches…

A:

Q: What is the mass of 1.6 x 1021 neon atoms?

A:

Q: Can you solve these please 1. Question: The glowing splint test is a demonstration of what property…

A: Glowing split test is basically for the oxidising agent like oxygen here the oxidising property of…

Q: What type of light is used in a TV remote control?     What is the mass number of the radioactive…

A: 1. A remote has an Infrared (IR) transmitter led which uses IR light to transmit you input to TV…

Q: The radius of a tungsten atom is 137 pm. How many tungsten atoms would have to be laid side by side…

A: Given :- radius of tungsten atom = 137 pm  To calculate :- number of tungsten atoms in 1.99 mm

Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.