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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: When two substances react chemically to produce a new substance what is TRUE of the mass of the two substances compared to the mass of the new substance
2 answers
Q: How are nitrates changed back into nitrogen
1 answer
Q: How much is 1 miligram
1 answer
Q: How many liters of fluorine gas will it take to convert 100 grams of C2H4 to C2H4F2 using the following reaction
1 answer
Q: What is the difference between ionic size and atomic size
1 answer
Q: Why does calcium carbonate does not react with carbonic acid
1 answer
Q: What is a characteristic property of an element
2 answers
Q: Why necessary to pre rinse volumetric glassware with the solution to be used in the titration process
1 answer
Q: Why is the pulmonary vein the only oxygen rich vein in your body
1 answer
Q: Which type of substance can only be separated by a chemical reaction
1 answer
Q: Is potassium abundant
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Q: How do air and water cause chemical weathering
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Q: What type of chemical reaction is Mg and HCL
1 answer
Q: What do you call a liquid mixture
1 answer
Q: Is oxidized in a galvanic cell made with silver and nickel electrodes
2 answers
Q: What is the balanced equation of p2s5 pcl5 yields pscl3
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Q: Why does soda implode when turned upside down in cold water
1 answer
Q: What does spattering of crystals mean
3 answers
Q: What characteristic is an ionic bond
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Q: Why lime is added to an acidic soil
1 answer
Q: Why carrot is red in colour
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Q: How do you describe an empirical formula
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Q: What do hydrocarbon reacts with when fossil fuels are burned
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Q: Why must care be taken in using radioisotopes for therapeutic purposes
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Q: Why does an aqueous solution conduct electricity
1 answer
Q: In order for an effective periodic review you should what
2 answers
Q: Why sulphur cannot be ised for making pipes
1 answer
Q: What reacts with carbonates a base or an acid
3 answers
Q: Is a pH greater than 7 a base or an acid
2 answers
Q: Is a candle melting a physical change or a chemical change
2 answers
Q: What is an nutrient that contains nitrogencarbonhydrogenand oxygen
1 answer
Q: What are the families of sodium and calcium
2 answers
Q: What factors cause the level of dissolved oxygen in water
1 answer
Q: When table salt is added to water the ionic compound dissolves. Does this represent a physical change or a chemical change
2 answers
Q: What is the maximum number of formula units of NaCl in one mole
1 answer
Q: What group number does the noble gasses belong to
2 answers
Q: What do sulfur oxides combine with to create nitro acid and sulfuric acid
2 answers
Q: What do you plant cells use to produce glucose and oxygen
1 answer
Q: What is the process where oxygen is reacted to produce heat and light called
1 answer
Q: How do you use homoglobin in a sentence
1 answer
Q: When iron reacts with oxygen to form rust each iron does what
2 answers
Q: Are elements Li and F similar
2 answers
Q: What is a heterogeneous mixture containing a liquid in which visible particles settle
1 answer
Q: What is another word for sugar phosphate
1 answer
Q: What goes in a pot hot then goes into the fridge hot and comes out hot what is the answer
1 answer
Q: What is the mass of 1.474 mol of potassium sulfide
1 answer
Q: What is the mass of a marker
2 answers
Q: How many water molecules (H2O) can be produced from 6 molecules of hydrogen gas (purple) reacting with 6 molecules of oxygen gas (turquoise)
2 answers
Q: Which is the chemical equation for burning gasoline
1 answer
Q: What occurs when rock is exposed to oxygen
1 answer
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