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Chemistry
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.
221k
Questions
Q: How does the potassium ion channel selectively allow potassium ions k to pass through but block sodium ion Na
1 answer
Q: How are atoms in chlorine gas typically found
1 answer
Q: Which of the following is a change of state of a substance
6 answers
Q: What is the chemical name of NBr3
1 answer
Q: Atomicity in chemistry means
2 answers
Q: Which acid kills harmful bacteria in the stomach
1 answer
Q: Why is ethanoic acid more hazardous than hydrochloric acid
1 answer
Q: What is the difference between Alanine and Glycine
1 answer
Q: What are the formulas for the compounds called copper (I) chloride and copper (II) chloride
1 answer
Q: A sample of the radioisotope potassium-40 is crushed to increase its surface area. The temperature of the sample is then lowered 25C. What affect do these changes have on the rate of nuclear decay
1 answer
Q: A liquid dissolved in a gas results in a solution that is .
2 answers
Q: What is the oxidation number of sulphur in sulphur powder
1 answer
Q: The rate at which a rock in a streambed dissolves would not be increased by .
2 answers
Q: How might a molecule with two strong bond dipoles have no molecule dipole at all
2 answers
Q: Is blood is an acid or base
7 answers
Q: 4. A log is reacting with oxygen as it burns in a fireplace. If the amount of oxygen reaching the log is reduced what happens to the rate of this chemical reaction
1 answer
Q: The bubbles in a carbonated soft drink are produced when carbonic acid decomposes to form carbon dioxide and water. In a closed system this equilibrium exists as Why does a carbonated soft drink lose
1 answer
Q: Is phosphorus cycle known by any other names
1 answer
Q: Look at the chemical reaction How does the chemical energy of the reactants compare to the chemical energy of the products
1 answer
Q: He total amount of energy before and after a chemical reaction is the same. Therefore energy is .
2 answers
Q: Ethane CH4 burns in oxygen gas to form water and carbon dioxide. What is the correct balanced chemical equation for this reaction
1 answer
Q: What is the color of lime water when phenolphthalein is added into lime water
2 answers
Q: How many teaspoons in 2kg of baking soda
1 answer
Q: What is the name of a compound containing potassium and chlorine
1 answer
Q: What is the synonym of chiily
1 answer
Q: Which has a larger surface area powder or lumps
2 answers
Q: What information in a balance chemical equation shows how many moles of a reactant are involved in the reaction
2 answers
Q: What is the colour of copper glance
1 answer
Q: Which of the group IIIA (13) elements has the largest ionization energy
4 answers
Q: What is the refractive index of hydrochloric acid
1 answer
Q: What is the oxidation state of an individual sulfur atom in (SO3)2
2 answers
Q: Are silver nitrate man made or natural
1 answer
Q: What major fuel is used in cell activities
1 answer
Q: How much energy is required to vaporize 1.5 of aluminum
2 answers
Q: How many uses does tungsten have
2 answers
Q: What does energy release when fuel is burned
1 answer
Q: How is delta hf related to the delta h of the reaction
2 answers
Q: Is h2co3 a nonelectrolyte
1 answer
Q: What is the density of a metal sample of a 37.51-g sample placed into a graduated cylinder increases the liquid level from 50.0 ml to 57.5 ml
4 answers
Q: What is the oxidation number of CH2Cl2
1 answer
Q: Is table salt a pure substance or mixture
6 answers
Q: Why some compounds of lithium have partially covalent character
1 answer
Q: Why PCL5 is more reactive than PCL3
1 answer
Q: What mass in grams of the liquid is in 34.6ml of the liquid
1 answer
Q: Does knowledge of chemistry help prepare people for a career in soil science
1 answer
Q: How do covalent bonds form between atom
1 answer
Q: What type of energy is required to begin the distilling process
2 answers
Q: What is name of the element Fe
2 answers
Q: Why is red phosphorus classified an amorphous solid
2 answers
Q: Is glucose an element mixture or compound
3 answers
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