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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 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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