Review of Elements and Compounds

Topic Page

Questions

• Question #f13ae
• Question #bb7b1
• Question #78896
• Question #fd74b
• Question #f13b2
• How do I find the molar mass of an element?
• What is an element?
• What are some common mistakes students make with elements?
• What are some examples of compounds?
• How are compounds formed?
• How are elements and atoms related?
• How do elements make up compounds?
• How are elements in the same group similar?
• How do ionic compounds form?
• How are molecular compounds named?
• How can elements have different isotopes?
• How do compounds differ from their component elements?
• How do compounds dissolve?
• How is a polar compound related to hydrophilic and hydrophobic interactions?
• What elements are diatomic?
• What elements are liquid at room temperature?
• Can anyone help me get a better idea of the molar mass concept and please don't give me a copy paste answer i have checked many websites already ?
• Question #74935
• Question #49678
• If the reaction involves change at the NUCLEAR level, is this a chemical reaction?
• What family of elements is relatively unreactive and why?
• How would you differentiate between ionic compounds, molecular compounds, and acids given only the formula?
• Question #79047
• What is the total number of different elements present in #NH_4NO_3#?
• What compound is #V_2SO_4#?
• Why Br2 with Br2 has higher viscosity than HF with HF?
• Question #55caf
• Question #5a9ed
• When Group 2A elements form ions, do they lose or gain electrons? Why?
• Question #2e8ae
• If oxygen is #"O"#, then what is #"O"_2# ?
• What is O2 and O3?
• Question #4cfe2
• Where are atoms that tend to gain electrons located in the periodic table of the elements?
• What textbooks or review material would you recommend to study with for a major in Chemistry?
• Why do living organisms contain more hydrogen atoms than any other atoms, yet 65% of a typical organism's mass is oxygen?
• Human bone is made up of a compound known as calcium hydroxyapatite, #[Ca_10(PO_4)_6(OH)_2]#. How many different types of elements is found in hydroxyapatite?
• Which of the following elements could be described as least reactive, relative to the other three answer choices? Why so?
• What are elements made of?
• Question #7cc46
• Question #dc3b8
• How are elements and compounds similar?
• What is the difference between elements and compounds?
• What is one property of radon?
• Question #d66e3
• What are some common elements and compounds?
• A blue solid is changed into a white substance and a colorless gas. Was the blue solid an element or a compound? Explain your reasoning.?
• How many atoms are required to form a molecule?
• Consider the letters in the word chemistry. Use them to make as many word "compounds" as is possible with 9 elements. How is an element different from a compound?
• What was Mendeleev's strategy for classifying elements modeled on?
• Is white phosphorus reactive?
• What is the difference between an element and a compound?
• Question #aa61d
• Question #2d104
• How many total number of all the elements present in mole of (NH4)2 Cr2O7? Thanks a lot.
• What is the difference between an element, compound, and molecule?
• What is inorganic carbon? Can you give examples?
• Question #7e1ea
• Question #d79e8
• What is the relationship between diatomic molecules and diatomic elements?
• What are hydrocarbons?
• How many elements is copper (II) hydroxide composed of? How many atoms?
• Which has more energy, a chlorine atom or a chlorine molecule?
• What is the difference between #"NI"# and #"Ni"#? How many elements are in each?
• Why isn't this test question on pure substances correct?
• Is #C_2# a real molecule?
• How does oxygen react with hydrogen?
• Question #e157b
• Question #b0f4b
• Question #ea8a2
• Question #56622
• Question #d0ee2
• Question #e9af4
• Question #3c517
• Question #8a948
• Question #b2c22
• Question #bc265
• What the relationship between elements and compounds?
• Question #20bda
• What is #C_6H_12O_6#?
• Question #ffc2c
• How do elements, compounds and mixtures differ?
• Together, which ions form hydroxyapatite crystals of osseous tissue?
• How do we differentiate between a #"molecular element"#, and a #"molecular compound"#? And how are these differentiated from #"non-molecular"# species?
• Question #d5929
• What is the difference between an atom and an element?
• Question #5c213
• How is naphthalene used in the household? Does it constitute a health hazard?
• What is the difference between ozone and dioxygen?
• Why do we not represent elemental sulfur as #S_8#?
• What is the smallest particle of a compound?
• Why does dinitrogen react with lithium metal?
• How are chemical formulae of different compounds represented?
• How would you prove that cuprous oxide is not an element?
• What ingredient is used in cosmetic products to keep them firm, yet soft and easy to apply to the skin?
• Question #ba271
• Question #d85f5
• Which of the following is true about ozone?
• All alkali and alkaline earth metals form ionic hydrides except Be and Mg WHY?? Please reasons, thanks
• Which of the noble gases are molecules or compounds?
• Is it possible to recognise sodium ions without using flame?
• Question #9e3f1
• Question #6daa1
• Explain the meaning of inner transition series?
• What is the compound formula for arsenic monophosphide?
• What is the formula for nickel (II) phosphate?
• Question #e1fc3
• Question #8c08d
• Question #a8817
• Question #8c664
• How do you know if it's not a Water Molecule?