are the elements designated as critical materials all rare?

Q: Which of the following techniques does not allow recovery of all components? a. distillation b.…

A: Evaporation is one of the methods by which we can separate out the solute which is soluble in a…

Q: How can you determine whether a Measured Value of substance represents an Extensive Property ?

A:

Q: Distinguish between an intensive property and an extensive property.

A: Introduction: When physical properties do not depend on the mass of a substance, it is called…

Q: Collaboration is not important in the pursuit of science. O True O False

A: The intellectual and practical activity encompassing the systematic study of the structure and…

Q: What is science and its scope?

A:

Q: Which of the following is part O glass collection tubes a power source thormo meter

A: Hofmann apparatus used for  electrolysing  water and  it is invented  by August  Wilhelm Von…

Q: If it can be chemically decomposed, what type of matter is that substance? D. Heterogeneous A.…

A:

Q: Which term listed is a property of a non-metal?  high density brittle shiny  conducts electricity

A:

Q: An engineer is designing a new phone and is in the process of choosing the elements to make up the…

A: Different elements shows different physical and chemical properties . There are elements which are…

Q: 4. For a liquid substance with different boiling points, which separation technique wouid be best…

A:

Q: What is science

A: Nature has provided humans with a lot of blissful ideas. Nature provides all the species with food,…

Q: Refer to Figure 1.10. What object(s) can be seen with an optical microscope but not the human eye?…

A: Optical microscope: It is a light microscope that uses one or a sequence of lenses to magnify…

Q: Which of these physical changes would require the liberation of energy? a. condensation of steam to…

A: Physical change - A change in which composition of substance does not change, only state of…

Q: Describe the necessary characteristics of a scientifictheory

A: To find: The necessary characteristics of a scientific theory

Q: All of these are examples of chemical properties except:   A. Density  B.Solid formed   C. Color…

A: We need to determine which of the given properties is not a chemical property

Q: 25. Two types of matter are mixtures and pure substances. The two types of pure substances are

A:

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: Chemical or physical a) Plants are the color green       b) Iron turns orangeupon exposure to…

A: Physical change is that change in which no new substance is formed rather original substances…

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: Grading Your final exam score will be posted after I have graded the essay question. The exam score…

A: The false statement are as follows: c) A mixture is 2 or more different pure substances chemically…

Q: Cite the evidence that indicates that only physical changes occur when a platinum wire is heated in…

A: Physical change means any kind of change of a substance's form like size, colour etc. without being…

Q: In what types of technology do the elements designated as critical materials generally play…

A: Some critical materials can produce very powerful magnets which withstand very high temperatures.…

Q: Which of the following could be considered to be a pure substance? Unknown 1 Neither one could be…

A:

Q: What is an element? A. Oxygen and nitrogen joined together. B. A piece of pure nickel C. A water…

A: The question is based on the concepts of general chemistry. it talks about elements which is purest…

Q: Define the characteristics of both science and pseudoscience.

A: Few characteristics of science are- Science is a systematic and logical study of knowing how…

Q: Physical Properties of Five Given Elements Conducts Brittle or Malleable Attracted to a Element…

A: In the table given, see the physical properties and elements corresponding to them.  For this…

Q: Why do gems have different properties than metals? I need a claim,evidence and reasoning.

A: Gems are the polished forms of gemstones. They are precious stones or minerals such as diamond,…

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: 71.0 °F = Κ %3D

A:

Q: What is substance examples?

A: To define: A substance.

Q: figures of merit

A: Dear student I have given answer to your question in the image format.

Q: An N-type sample of silicon has uniform density (Nd = 1019cm-3) of arsenic. and a P-type  

A:

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: An example of a semiconductor is ZnS with a particle diameter of 1.8 nanometers. Convert this value…

A: Applying basics relationship between nm to dm and nm to inches.

Q: The physical state in which matter is not hard to compress is: A) solid B) liquid C) gas D) both…

A: There are three main physical states of matter  - solid , liquid and gas.  (1) Solid state has…

Q: How can you differentiate between natural and engineered nanoparticles in the environment?

A: The nanoparticles which occur in nature are called Natural Nano particles. These are generally found…

Q: Metal copper and magnesium metal colors after being heated?

A: When copper metal is heated in the air, it reacts with the oxygen of air and forms copper oxide that…

Q: Classify each of the following pure substances as an element or a compound. Drag the appropriate…

A: Compound : when two or more atoms combine with each other the product formed is called compound.…

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.

Q: What is a example of an extensive property

A: Extensive property:The property that depends on the amount of matter in a sample is said to be…

Q: Which of the following are chemical changes? and which are physical changes? DNA unwinding?

A: If the reaction is irreversible and bond making and bond breaking occur in the reaction and then…