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Chemistry

Delve into the study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. Chemistry is the central science connecting other scientific disciplines.

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Questions
Q: What is the element which belongs to the third group and third period
2 answers
Q: What is a sentence using chlorophyll
2 answers
Q: Write a balanced equation for the precipitation reaction that occurs when aqueous solutions of sodium carbonate and iron(III) bromide are combined.
2 answers
Q: When aqueous solutions of Pb(NO3)2 and FeCl3 are mixed does a precipitate form
4 answers
Q: Describe oxidation acid precipitation carbonation organic acids in terms of chemical weathering
1 answer
Q: When one atom shares an electron with another atom to fill the outermost shell it forms an
2 answers
Q: When one atom gives up an electron to another atom what does it form
7 answers
Q: What is a black burnable substance mined from earth used for generating electricity same as charcoal
2 answers
Q: Chemical name for C12H22O11
7 answers
Q: Why does solid citric does not conduct electricity but a solution of citric acid does
1 answer
Q: How many elements does CO have
1 answer
Q: How coal forms
2 answers
Q: In most medical procedures hazardous waste is produced. This hazardous waste is usually burned which can release hazardous chemicals like mercury into the air. How could technology be best used to sol
1 answer
Q: Is drain cleaner mixed with water and the solution becomes warm a chemical change
2 answers
Q: High energy molecule used by cells
2 answers
Q: How are ionic compouds named
1 answer
Q: Which of the following are elements of the COLDER principle (Select all that apply)
2 answers
Q: What is the cost for chlorine
1 answer
Q: Choose the element that is largest.
3 answers
Q: What element that will most easily lose an electron.
6 answers
Q: The lattice structure in a metal is than the lattice structure of an ionic compound.
1 answer
Q: How many covalent bonds join the atoms in a molecule of ammonia(NH3)
3 answers
Q: A chemistry student writes the molecular formula for sodium phosphate as Na3P1O4. Although this version of the formula is acceptable how is the formula more typically written
2 answers
Q: The molecular formula for hydrogen sulfide is H2S. What does the formula indicate about the composition of a 1.0 gram sample of hydrogen sulfide
2 answers
Q: A substance that does not form hydroxide ions in a water soultion is a base
1 answer
Q: What type of bond is CH
1 answer
Q: Define the term oxygen saturation.
1 answer
Q: Polymers would include any 5 of the following acrylic polyethylene silicone Bakelite fiberglass polyvinyl chloride (PVC or vinyl) and nylon.
2 answers
Q: A substance that forms hydroxide ions in a water solution is a base
2 answers
Q: Is BrO3 Covalent or Ionic
2 answers
Q: Na-23 has 12 neutrons what is the atomic number
3 answers
Q: The amount of energy in the bonds of the reactants plus any energy absorbed equals the amount of energy in the bonds of the products plus any energy .
2 answers
Q: This item is a common source of heat in a laboratory.
7 answers
Q: The strength of an acid and a base is determined by how completely they blank in water
1 answer
Q: What is the number of electrons in boron
1 answer
Q: In the reaction between bromine and sodium a bromine atom gains an electron and forms the bromide ion Br and ndash. What happens to bromine
1 answer
Q: A nuclear Chain reaction occurs when
2 answers
Q: Is an energy drink a homogeneous mixture or a heterogeneous mixture
7 answers
Q: What is the freezing and melting point of boron
1 answer
Q: Which SLoc is used for property being added or removed from a UIC
2 answers
Q: Name the green coloured chemicals in leaves
1 answer
Q: How hot is 400 degrees Celsius
2 answers
Q: Lead is how much heavier than iron
1 answer
Q: Is cocoa powder ionic or covalent bond
1 answer
Q: In 1661 who developed a definition of element that made the concept subject to laboratory investigation
1 answer
Q: A water molecule contains two hydrogen elements and one oxygen atom what is wrong with this question
3 answers
Q: Mass of oxygen in one breath changes as you climb from sea level
1 answer
Q: Why does baking soda turn apples brown
1 answer
Q: What chemical change occurred in the following reaction Mg2 plus (aq) plus 2OH and minus(aq) and 10230 Mg(OH)2(s)
2 answers
Q: To write the formula for an ionic compound write the formulas for the cation and the anion then use subscripts to what charges
1 answer
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