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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: Is an acid or base often slippery
1 answer
Q: Families and groups are interchangeable when it comes to naming vertical columns.
2 answers
Q: The fewer electron shells the shielding of electrons from the nucleus.
3 answers
Q: The atoms in hydrogen gas and in water are joined together by covalent bonds. both of these substance are thus composed of
1 answer
Q: Why the sealed packets of in which food items are sold are usually filled with nitrogen
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Q: What element has one more proton than sodium
1 answer
Q: What are the substances that the root hair absorbs from the soil
1 answer
Q: What is a dropper pipette
2 answers
Q: How do oxygen and carbon dioxide interact with plants
2 answers
Q: When g of nitrogen and 6g of hydrogen react 34g of ammonia are product
1 answer
Q: Is NCl3 ionic
1 answer
Q: A bathroom cleaning product removes a stain in the sink how is it a chemical change
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Q: Chlorine gas reacts with pottassium bromine yielding potassium chloride and liquid bromine
1 answer
Q: What term is used to describe 4 in the expression 4CA(NO3)2
2 answers
Q: What is the compound name S2Br7
7 answers
Q: Why did 50cm3 of soil and add 50cm3 of water not give total of 100cm3
1 answer
Q: Do watermelons contain citric acid
1 answer
Q: Describe the path that a molecule of oxygen takes as it moves form the air outside your body into the alveolar
1 answer
Q: What is a chemical substance that people of any age may not lawfully manufacture possess buy or sell
2 answers
Q: What is the chemical name of PtO2
4 answers
Q: When is it preferable to use a plastic volumetric flask
3 answers
Q: Except for metalloids what do all of the elements on the right side of the zigzag line have in common
7 answers
Q: What is the maximum number of electron the n 2 electron shell can hold
5 answers
Q: The volume of a container is 40 cm3. It has a length of 4 cm a width of 2 cm. What is the height of the container
1 answer
Q: In the reaction A plus B C plus B what are the reactants
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Q: If Bromine has an atomic number of 35 and has 45 neutrons what is its mass number
1 answer
Q: . A mixture of oxygen hydrogen and nitrogen gases exerts a total pressure of 282 kPa. If the partial pressures of oxygen and hydrogen are 110 kPa and 106 kPa respectively what is the partial pressure
2 answers
Q: What would a significant source of phosphorus be provided by
1 answer
Q: Which condition applies when water boils at 100 and degC
5 answers
Q: When K plus and I- combine a(n) bond results.
2 answers
Q: What color tube for bilirubin direct
1 answer
Q: What does .925 cna inside a ring mean
1 answer
Q: Which of thew following best describes a property of water
3 answers
Q: Which pair of substances would most likely result in the production of a gas when reacting with an acid
1 answer
Q: Is rubidium and calcium an ionic compound
5 answers
Q: Name at least 4 other gases in the atmosphere besides oxygen and nitrogen
1 answer
Q: The attraction between various combinations of atoms will produce bonds which form molecules. True False
1 answer
Q: A mineral's ability to reflect light is a test for .
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Q: Iron silver and gold are all examples of .
3 answers
Q: Look at the periodic table. What is the charge on any ion formed by an alkaline earth metal
1 answer
Q: Aluminum oxide is decomposed balanced equation
1 answer
Q: The most active metals on the periodic table are found on the lower left upper right middle upper left or lower right
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Q: What is the atomic mass number of an atom of sodium that contains 12 neutrons
1 answer
Q: What is the differences between subscripts and coefficients
3 answers
Q: Electronegativity is defined as a measure of the tendency of atoms to attract electrons in a chemical bond. True False
1 answer
Q: Which element if combined with iodine will have the greatest attraction for the iodine electrons B C P
2 answers
Q: Which element if combined with chlorine will have the greatest attraction for the chlorine electrons N P As
2 answers
Q: In an acid-base titration equivalent quantities of hydronium ions and hydroxide ions are present a. at the beginning point. c. at the endpoint. b. at the midpoint. d. throughout the titration.
2 answers
Q: Why do the solid sodium hydroxide and aluminium powder not react when stored in a sealed container
2 answers
Q: Write an equation showing the ionization of hydrochloric acid in water
1 answer
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