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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: What letter do most acids start with
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Q: What are two methods used to measure pH
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Q: What effect does lone pair electrons have on molecular shape
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Q: Which regent is used for testing a carbonate radical from following 1 H2S 2 H2O2 oxygen 4 CaCl₂
1 answer
Q: What is the definition of a elemant according to Lavoisier
1 answer
Q: What is nitrogen fixation Describe how it happens.
1 answer
Q: If the difference in electronegativity values between two atoms is less than 0.4 non-polar covalent bonds generally form true or false
1 answer
Q: What is the balanced equation describing the reaction between hydrogen gas and oxygen gas to produce water
1 answer
Q: What mass of copper contains the same number of atoms as 68.7 g of iron
5 answers
Q: How compared with the melting points of ionic compounds the melting points of molecular solids tend to be
3 answers
Q: How much does a gallon of bentonite clay weigh
2 answers
Q: What is the formula for a compound formed from the elements Al and S
8 answers
Q: Why characterizes the bond formed between two identical atoms
1 answer
Q: Which value most closely represents the number of grams in 20 moles of carbon
2 answers
Q: Which best represents the number of moles in exactly 84 grams of chlorine (Cl2) gas
2 answers
Q: How many moles are there in 1.2 x 1024 particles
2 answers
Q: How many moles of sulfur are in 53.7 grams of sulfur
2 answers
Q: How From left to right the three regions of a phase diagram represent what of a substance
2 answers
Q: What is the differences between biological andchemical hazards
1 answer
Q: Which element forms compounds with all other element except heliumneonand argon
1 answer
Q: Why are acid often times stored in amber-colored bottles
6 answers
Q: What is parachor value of acetic acid
1 answer
Q: What is the solution of sodium sulphite in water
1 answer
Q: What colours do silver and brown make
1 answer
Q: Why Ammonium molybdate is used in test for phosphorus
1 answer
Q: What is lead (IV) bromide formula
1 answer
Q: What is the ions for Na2CO3
9 answers
Q: What are the subatomic particles that are found outside of the nucleus and carry a negative charge
5 answers
Q: What is Orange when hot and yellow when cold
1 answer
Q: Why do you need to use a safety mat when using a Bunsen burner
1 answer
Q: Where can rhodium be found
1 answer
Q: How is a negative ion is formed
2 answers
Q: What is the dissociation of Cu(ClO4)2
2 answers
Q: What is the net ionic equation for HF and NaOH
2 answers
Q: Is potassium iodide a ionic or molecular
1 answer
Q: What is the pH level for smart water
1 answer
Q: Which describes a way in which phosphorus may enter into the phosphorus cycle
1 answer
Q: Is sodium thiosulphate soluble
1 answer
Q: In a physical change some of the physical properties of the substance may be altered and the chemical composition
4 answers
Q: Is a rusty nail metallic
2 answers
Q: Is sodium thiosulphate conductive
1 answer
Q: Is sodium nitrate conductive
1 answer
Q: Is C6H11O6 ionic or covalent
1 answer
Q: What is the balancing equation of ZnS plus HCl ZnCl2 plus H2S
1 answer
Q: What is needed for the energy releasing chemical reactions that take place inside your cells
2 answers
Q: Which element has a larger ionic radius than calcium
9 answers
Q: What is the difference in electronegativity between S-O
1 answer
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