Chemistry

Which of the following is NOT a characteristic of a compound? A. has different properties from the elements that formed it B. pure substance made of two or more elements C. can be represented by a chemical formula D. different samples have different properties
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Find the percent of oxygen in CaClO3)2 Show your work
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1 pointNitrogen has three occurring isotopes: Nitrogen-13, Nitrogen-14, Nitrogen-15. Which isotope is the most abundant?
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What all indicates a CHEMICAL change? *A Solid melting into a liquidAfter the change the substance is still reactive with oxygenOne substance becomes two new substancesThe melting point was 100 deg C but after the change the melting point was 256 degC.
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What element is the only Noble Gas in the s-block?
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is a dolerite a mineral or a rock
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18. Which of these is an ion?A. Fluorine with 9 protonsB. Calcium with 18 electronsC. Calcium with 18 neutronsD. Fluorine with 9 neutrons
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Substances which will glow in the dark after being exposed to sunlight are: radioactive photosensitive luminescent phosphorescent
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FILL IN THE BLANKS ASAP 40 POINTS AND BRAINLIST
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explain how to balance the chemical equation, KClO3 KCl + O2 and include all steps
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The kinetic energy of a moving object depends on its mass and itsa. volume.b. velocity.c. distance.d. acceleration.
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What mass of ethanol will Alla 250.0 ml container if itsdensity is 0.789 g/ml?
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A star's mass determines the A) shape of a StarB) location of a star C) length of its lifecycle D) galaxy it belongs to
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The rows in the periodic table are called periods.What is true about elements in the same period?
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what is erotic please answer
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K+ Cl2 balance equation
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the number of protons will tell you what elements it is. T or F plzz help
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Photosynthesis occurs. How do plants get the carbon dioxide they need for photosynthesis?
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how long will take an object traveling at 25 m/s to reach a distance of 125 meters?
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Which is the larger atom S or Mg
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Which can change from one state of matter to another at the temperatures and pressures experienced at Earths surface? oxygencarbon dioxidewaternitrogen
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IERFLINE JE PELENE BIOSE ELETTESSELFS EEEBERLE0
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What happens if an organism cannot carry out its life function?
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Please answer correctly !!!!!!!! Will mark brainliest !!!!!!!!!!!!!!
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