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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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Q: Why group 17 elements are strong non metals while grour 1 elements are strong metals
2 answers
Q: An atom with 10 electrons must have how many shells
1 answer
Q: A binary ionic compound is made of two components. Name one of them.
2 answers
Q: Ask us anythingIn the covalent compound C3H8 the Greek prefix used to represent the cation is .
1 answer
Q: The active ingredient in the conversion of organic material into alcohol is
2 answers
Q: Is C8H10NH2 an inorganic carbon compound
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Q: Name two confirmatory tests for the presence of intact explosives located in debris
1 answer
Q: Pairs of electrons are shared in a bond. The actual number of pairs is called bond order
2 answers
Q: How do you differentiate metals from non metals
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Q: Equation reaction between zinc and dilute sulphuric acid
1 answer
Q: How do you differentiate elements and compounds
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Q: What are the ionisation enthalpies of potassium and sodium
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Q: What are 10 example of compounds
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Q: The net movement of water across a membrane from the solution of lower concentration to one of higher concentration is called
5 answers
Q: This element has an atomic number lower than that of aluminum and one less valence election than the group 16 elements
1 answer
Q: Can be decomposed by electricity into the elements hydrogen and oxygen a chemical
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Q: What are the differences between ionic equation and molecular equation
1 answer
Q: Core electrons in Ra
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Q: In every chemical reaction the total mass of the reactants always equals the total mass of the products.this fact is known as the
3 answers
Q: What contains dissolved salts and minerals
1 answer
Q: Chemicals on the left side of a chemical equation are called
1 answer
Q: Hybridization of SiCl4
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Q: What is the solvent and the solute in coffee
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Q: A liquid has a definite but it takes the shape of the container holding it
1 answer
Q: What name is given to all vertical columns in the table
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Q: If points f and g are contained in a plane then fg is entirely contained in that
4 answers
Q: What is the name of a change which means the products can't be returned back to the reactants
1 answer
Q: Is aipo4 ionic or covalent bond
4 answers
Q: Is Benzyl Acetate a Aldehyde or Ketone
1 answer
Q: What number of moles does 32.00 g of LiF represent
2 answers
Q: Is Purple fire real
1 answer
Q: Avogadro's number was calculated as the number of .
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Q: A compound formed of only phosphorus and oxygen is found to be 56.35 phosphorus. What is the empirical formula of the compound
2 answers
Q: Chemical bonds are likely form when
2 answers
Q: Chemical equation for burning fossil fuels
1 answer
Q: What is one of the signs of a chemical change
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Q: Is potassium chloride an acid
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Q: Elements and compounds cannot be broken down into simpler substances by an ordinary what
3 answers
Q: Dissolving a rock in acid is the equivalent of
2 answers
Q: Why freshly cut metal has lustrous surface
2 answers
Q: Scientific name for phosphorus
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Q: The periodic trend for electronegativity is similar to what trend
2 answers
Q: Given the incomplete equation 4Al plus 3O2 2X what compound is X
2 answers
Q: What did John Dalton contribute to understanding of the atom
3 answers
Q: Why use NaHCO3 for iodometric titration
1 answer
Q: Why was coal mining dangerous
1 answer
Q: Why do colors appear on the surface of a soap bubble
1 answer
Q: Why is it that diatomic molecules always form nonpolar covalent bonds
1 answer
Q: A student predicts that similar ice cubes will melt faster in a microwave than in a pot on the stove. How should this hypothesis be tested
2 answers
Q: Is urea formaldehyde thermoset or thermoplastic
3 answers
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