Q: Is carbon dioxide gas a pure substance? Explain.
A: Yes, the Carbon dioxide(CO2) is a pure substance.
Q: Enumerate the laws of matter and define each.
A:
Q: What is the definition of a physical property? What is thedefinition of a chemical property?
A: answer is discussed below :
Q: Which of these changes are physical and which are chemical? ExplainA goldsmith melts a nugget of…
A: A change in which the chemical composition of the substance remains the same and no new substance is…
Q: Is this a chemical or physical change? List your reasons
A: When calcium metal , which has a silver color is heated with oxygen gas it gives calcium oxide as a…
Q: Give three examples illustrating each of the following terms. Homogeneous mixture- sugar solution,…
A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…
Q: Is there an ultimate, indivisible unit of matter? support the answer.
A: Given : Indivisible unit of matter To find : any ultimate that is indivisible unit of matter…
Q: What do you think is the important of identifying and knowing the states of matter?
A:
Q: What is conservation of matter
A:
Q: What is the definition of matter
A: What is the definition of matter
Q: Which of these changes are physical and which are chemical? Explain.(a) Plants make sugar from…
A: According to the question, sugar is made from water and carbon-dioxide. We have to mention as to…
Q: Which one of the following is a pure substance? elemental oxygen rock apple air tap water
A: Substance which is made up of single or one type of atom or molecule is known as pure substance.…
Q: Which of the following is not a physical change? Frying an egg Boiling water Liquefying oxygen…
A: Physical change is the process where the apperance of the matter or the state of matter changes. But…
Q: 19. Which of the following substances would be classified as a mixture? a. Water b. Table Salt С.…
A: Applying definition of mixture.
Q: How can we use the properties of matter to identify a certain substance?
A:
Q: (a) Under one set of conditions, the substances in A and B mix, and the result is depicted in C.…
A: To find: Whether the following changes are physical or chemical.
Q: A chemical reaction must be used to separate a. solids from liquids b. a mixture into its components…
A: A chemical reaction is defined as the process of transformation of the original substances…
Q: Question 4
A: Compound is defined as a chemical species in which two or more elements are bonded together through…
Q: Relate the properties of matter to its composition?
A: Matter is anything that has mass and volume. All matter comprises of atoms. The characteristics…
Q: All of the following are properties of sodium. Which one is a physical property of sodium? A.…
A: Physical properties are those properties which resemble state of a substance, its shape, size and…
Q: zinc and copper are used in the measurement of food. Are there other topics possible
A: A question based on measurement that is to be accomplished.
Q: Which of the following items are a matter and which are not? a flashlight, a sunlight, an echo, a…
A: Matter is anything that has mass and occupy space.
Q: Is baking considered a physical change or a chemical change?
A: Baking is a process in which item to be baked is mixed with baking soda and heated in oven. Baking…
Q: 3. Which of the following are pure substances and which are mixtures? a. table sugar b. distilled…
A: Pure substance is made up of only one type of particle. It is always homogeneous in nature.Mixture…
Q: State whether the following properties of matter arephysical or chemical.(a) An iron nail is…
A: a.
Q: Describe the characteristics that identify a sample of matter as a substance.
A: Substance is a matter. Matter is something which occupies space. We all know that there are three…
Q: Q.3. Observe the following pictures and answer the questions. 1. Which of the picture above are…
A: We need to determine which of these changes are temporary and which are permanent.
Q: Which of the following is an example of physical change? O Mixing baking soda and vinegar together,…
A: A physical change is the change of matter that occurs withoutchanging the chemical composition of…
Q: Distinguish between intensive and extensive properties of a substance.
A: Since you have posted multiple questions, we are entitled to answer the first only.
Q: What is physical property and chemical property?
A: Physical property- Physical property are those property whose identity does'nt change. Physical…
Q: When Jill opened the bottle containing a clear liquid, the whole room smelled like roses." Based on…
A: Compound is a pure substance that is pure and contains atoms of two or more types of elements in…
Q: If a red and green solution are mixed and an orange mixture esults, is this evidence of a physical…
A: Physical change is the change in which physical property of the compound changes and it is…
Q: Which is of the following is an example of a physical property? A) lead forming lead oxide in the…
A: We have to predict Physical and chemical change along with density and volume calculation.
Q: Which is an example of a physical change? O Metal rusting O silver tarnishing O Water boiling O…
A: Physical change: In a physical change the physical state of matter changes. In this change different…
Q: Which one of the following is a PURE chemical substance Sea water O Selenium O Air O Paper
A: Given substances: Sea water Selenium Air Paper We have to find the pure chemical substance.
Q: Two beakers contain clear, colorless liquids. When the contentsof the beakers are mixed a white…
A: Chemical change- The change in which chemical reactions are happened called as chemical change. e.g.…
Q: The alchemical, medical, and technological traditions were precursors to chemistry. State a…
A: Contributions made to develop the science of chemistry are 1.The Alchemist tradition: It is the…
Q: 22. Which of the following particulate illustrations represent pure substances and which represent…
A: (a)
Q: Which of the lower ones is not correctly recognized for a physical property? A) The ability of a…
A: Answer - Physical properties - Physical properties can be observed or measured without changing the…
Q: Which of the following is not an example of a physical change? a. Ice melts when warmed b. Dry ice…
A: Physical change of a substance means molecules of that substance are rearranged but actual substance…
Q: Which of the following is a pure substance?? Air Sand Salt water Gold
A: Correct option is D . Gold it is made up of only gold atoms remaining all other are mixtures. So…
Q: Which option is a physical property of matter? O boiling point O acidity O reactivity O flammability
A: Physical properties are those properties in which the chemical identity of matter is retained.
Q: Describe an example of how you see the law of conservation of matter at work in your daily life.
A: Law of conservation of matter states that matter can neither be created nor be destroyed, but it can…
Q: light
A: C) heat Calorie A unit of heat equal to the amount of heat needed to raise the temperature of 1,000…
Q: Classify following as pure substances and mixtures – Air, glucose, gold, odium and milk.
A: Given: Air, glucose, gold, sodium and milk
Q: How to identify the similarities and differences among differentkinds of matter.
A: How to identify the similarities and differences among different kinds of matter.
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- write the application of supramolecular chemistry...asap plz dont use googleSuppose a chloride ion and a sodium ion are separated by a center–center distance of 5 Å. Is the interaction energy (the energy required to pull them infinitely far apart) predicted to be larger if the medium between them is water, or if it is n-pentane? If Ca 2+, Na+, and F - each have ionic radii ∙1.16. Which ionic bond is stronger: Ca-F or Na-F? If Ca 2+ is often bound on the surface of a protein by carboxylic acid functional groups. If the pKa of a particular ¬COOH group is 4.2, would you predict Ca 2+ to be most tightly bound at pH 8, pH 4.2, or pH 3? Explain your answer.Nanomaterials are substances with at least one dimension between a. 1 and 10 pm b. 1 and 100 pm c. 1 and 10 nm d. 1 and 100 nm
- Another general principle of physiology states that physiological processes are dictated by the laws of chemistry and physics. Give at least two examples of how this principle is important in understanding the processes of absorption and secretion in the GI tract.Determine the boiling point of CS2, in °C, from the following data: CS2(g) CS2(l) ΔHf° / (kJ mol–1) 115.3 87.9 S° / (J mol–1 K–1) 237.8 151.0 Answer Options: 258 -14 116 78 43What is qrxn? -3661 J -146.4 J +146.4 J +3661 J
- The magnitude of the electric field at a distance r from a point charge Q is equal to Q/4πε0r2. How close to a water molecule (of polarizability volume 1.48 × 10−30 m3) must a proton approach before the dipole moment it induces has a magnitude equal to that of the permanent dipole moment of the molecule (1.85 D)?What is dispersion statistics? Why is it important?Chlorophyll absorbs photons strongly in two bands, one between 340 and 450 nm and the other between 650 and 680 nm. Chlorophyll collects and transfers the photon energy to fix CO2 into carbohydrate CH2O units according to CO2 + H2O → (CH2O) + O2 where the (CH2O) indicates one carbon unit of the carbohydrate. The average enthalpy change for the addition of a carbon unit to a carbohydrate is ΔH = 485 kJ/mol. What is the minimum number of 660 nm photons needed by chlorophyll to add a carbon unit to a carbohydrate? (Remember that there’s no such thing as a partial photon.) Please no copy paste from anywhere