Chemistry

Neurons contain which two structures that help them transmit messages?sarcomeresdendritesan extracellular matrixaxons
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A___ change occurs when a substance changes phase.
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Which is a chemical property of oxygen?1.It reacts with iron to form rust. 2.It is a gas at room temperature. 3.It expands when heated. 4.It combines to form O 2 molecules.
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In an isotope, what does the 'u' stand for? For example: Lithium isotope: Li-6 6u The u after 6
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how many molecules are in 3.40L of H2O vapor at STP?*
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How does a cold trap catch pollutants in smog?
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compare and contrast solids liquids and gases in terms of volume shape compessibility and energy
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Calculating Density A sample of a sub-stance with a mass of 85 g occupies a vol-ume of 110 cm What is the density ofthe substance? Will the substance floatin water? Explain your answer:
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Could someone answer this for me?
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PLEASE HELP 30 POINTSBecause the rock is irregularly shaped, you used the displacement method to measure its volume.You used (______) to indirectly find the (_____) of the objects.Options for the 1st fill in the blank:- a balance- calculations- a graduated cylinderOptions for the 2nd fill in the blank: - density- mass- area
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Two pieces of paper are stapled together.
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100 POINTS!!!!The passage states that water exists in three states on Earth. Trace the changes in state of matter, from snow-capped mountain, through the water cycle, and finally back to the snow-capped mountain.A) melting snow; lliquid runoff; liquid water evaporates; water freezes; precipitation of frozen water (snow) back to Earth B) solid snow melts; liquid water flows to oceans; water evaporates; water condenses to form clouds; snow falls back to Earth C) solid snow melts; liquid water evaporates; gaseous water vapor condenses; water freezes; precipitation of frozen water (snow) back to Earth D) solid snow melts; liquid water soaks into ground; plants take up water; water evaporates; water freezes; precipitation of frozen water (snow) back to EarthYOU CAN HAVE ALL MY POINTS AND THE BRAINLIEST PLS HELP ME!!!!
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What is radiation?????????????
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When a solution containing 1.4000 g of Ba(NO3)2 and 2.4000 g of HSO3NH2 is boiled, a precipitate forms. One possible identity for this precipitate is Ba(SO3NH2)2. a) Determine the limiting reagent for the balanced reaction, and then calculate the theoretical yield in moles. b) Calculate the experimental molar mass if 1.6925 g of product were formed.
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Which is a homogenous mixture?1. ceasar salad2. pre-cooked pizza3. coffee in a cup4. different color beads in a bowl
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What is the independent variable in this experiment?
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Plz help! This question is due in 10 mins!Calculate the density of a 5cm3 cube of iron with a mass of 100 g
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most of the substances around us are ________compounds free atomspure elements
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Meaning of biocentric
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need a top pick for another slide to talk about crystals
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Which step in the Scientific Method should be done after asking a question and before developing a hypothesis? A)analyze the data B)communicate findings C) conduct background research D)design an experiment
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, glucose is converted into what three products? science
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Which of the following represents two molecules of carbon dioxide?C 2O 2CO 22C 2O 22CO 2
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Which metals have similar chemical properties?bariumberylliumrubidiumradiumtitaniumcalciumplatinum
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