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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: What term correctly describes all of the following materials salt water vinegar bronze air beach sand
2 answers
Q: What is the valence of lead oxide
1 answer
Q: What element has one valence electron and is very reactive
2 answers
Q: What is the compound CO2 made of
1 answer
Q: What is the conserved in this reaction h2(g) plus ci2(g)---2hci(g)
1 answer
Q: What elements are in hci
2 answers
Q: What temp will water boil in ceelsius
4 answers
Q: How many elect trons are in oxygen
1 answer
Q: Is hydro choleric acid an element
1 answer
Q: In the notation arsenic-76 the number 76 represents
2 answers
Q: What is the symbol atom or ion
7 answers
Q: What volume will 400 ml of argon gas initially at 30 degree celsius and 725 mmHg occupy at 30 degree celsius and 650 mmhg
2 answers
Q: If an atom of iodine gains one electron it will have the same number of valence electrons as which element
2 answers
Q: What temperature does ammonia burn
2 answers
Q: How do you prepare 2N NaOH in 20 ml
1 answer
Q: Why colour of copper sulphate crystals changes on heating
1 answer
Q: Is Cu2O organic
1 answer
Q: Is a copper penny turning dark a chemical change or physical change
2 answers
Q: What is the density of a marble that has a mass of 976g and density of 2.55gCM3
2 answers
Q: Why can metals easily be rolled into thin sheets and drawn into wires
7 answers
Q: What element can be used as a component in an artificial heart
1 answer
Q: What is the state of nitrogen at 100 degrees celcius
1 answer
Q: What is the definition of crystal
2 answers
Q: Why do elements potassium and sodium have similar chemical properties
2 answers
Q: How can humans negatively affect the pH levels in water
1 answer
Q: What is the Fe2 plus electron configuration
2 answers
Q: What is the noble gas configuration of strontium
2 answers
Q: How do you convert 12.54 g of Cu to atoms
2 answers
Q: What part of speech is decay
1 answer
Q: What is the electron configurations of sulfur
4 answers
Q: What does the formula tell us about a chemical compound
1 answer
Q: Are all examples of what
2 answers
Q: What is the difference between Carbohydartes and Lipids
1 answer
Q: What is the difference of gas and liquid compressed
1 answer
Q: What can r12 and r22 can decompose to form
1 answer
Q: What does manganese above an arrow in a formula equation mean
2 answers
Q: What chemical is burning when you see a violet purple flame
6 answers
Q: Is tie dye powder toxic
1 answer
Q: What is the pH level of bear stomach acid
1 answer
Q: What is Summary of Straw into gold
1 answer
Q: Why is it necessary to turn off a Bunsen burner when used with alcohol
1 answer
Q: What is the relationship between penetration coefficient and relative miscibility of alcohols
1 answer
Q: Is He a compound or element
2 answers
Q: What minerals scratch calcite
2 answers
Q: What is similar to bromine
1 answer
Q: What is a following as an example of a chemical change
3 answers
Q: What happens to molecules as they are heated and cooled
1 answer
Q: What is a rule for determining the mass
2 answers
Q: What is channel diffusion
1 answer
Q: Is SCL ionic
1 answer
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