Chemistry

Match each term in the first column with an example in the second column. On a sheet of paper, write the letter of the answer.1. physical property2. chemical property3. solid. 4. liquid 5. physical change 6. chemical change A. ability to burn B. rust appears on a nail C. a puddle freezes D. substance that has a definite shape and volume E. temperature or destiny F. substance that has a definite volume, but no definite shape
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Food waste, like a feather or a bone, fall into food, causingcontamination.PhysicalChemicalPestCross-conta
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explain how wavelength is related to the energy of a wave
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Calculate the molar mass of NH4NO3. Molar mass of NH4NO3 = g/mol.
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What type of mixture is throughly mixing powdered lemonade with water
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Write word equations for the reactions of a) magnesium with chlorine b) potassium with oxygen c) sodium with bromine d) carbon with oxygen.
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does Waves move in a circular motion.True or false
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Predict the decay process and write the nuclear equation of Cf- 255
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For the following hypothetical reaction:3A + 12B --> 3CHow many moles of B will you need to convert 5 moles of A into as many moles of C as possible?
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the ____ changes when electrons are gained or lost.
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the size of camphor kept in store house gradually decrease in size after few days?
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Enter the correct ground-state (or lowest energy) configuration based on the number of electrons: 1s^4 2s^4 2p^12.Express your answer in complete form in the order of orbital filling as a string without blank space between orbitals.
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Will calcium metal react with chromium (III) chloride? Explain your answer
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Im in science class right now and I need help on these questions
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Explain why the first ionisation energy of beryllium is higher than the first ionisationenergy of lithium.
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A team of scientists is conducting tests to measure the boiling point of a liquid using a thermometer in the liquid. The team isthen recording the temperature where the liquid changes from a liquid to a gas rapidly. After 100 trials, the results are 5 degreesbelow the expected results. Which next step is most reasonable? (1 point)O checking the calibration of the thermometer to ensure that it is giving accurate readingsO assuming that the new results are incorrectO assuming that the previous measurements are incorrectO checking the insulation of the apparatus to find out if heat is escaping
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A titration process is done by using 0.2M of 20 ml of third analytical group main reagent solution with 0.1 M nitric acid solution if nitric acid is replaced by sulphuric acid of same concentration, then the volume of sulphuric acid equals Half the volume of nitric acid Double the volume of nitric acid The volume of nitric acid Quarter the volume of nitric acid
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when an acid and alkali react to form water and salt
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How many atoms are AI(OH)3 ?
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magine that you are a water molecule in a group of many water molecules. Write a letter to a friend telling them about your journey through the water cycle on Earth. You can begin your journey anywhere youd like, but you must complete an entire cycle and end the journey where you began. Write your letter in complete sentences. Use each of the following terms correctly in your letter: condensation evaporation precipitation collection (HELP PLS ILL GIVE 54 points *all my points* AND GIVE BRAINLIEST HELP PLS)
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What is the main cause of global convection currents?A. DeforestationB. The Greenhouse effectC. The increase in the number of citiesD. Uneven heating of the Earth by the sun
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Movement caused by warmer fluids rising and cooler fluids sinking is called ______________.
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1 pointConvert 3.79 x 10^24 atoms of sodium to grams.
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Why is there a large difference between day and night temperatures in a desert?All rainfall in a desert happens at night.There are no plants to trap the heat.Heat escapes rapidly at night because the air is so dry.The ground absorbs all heat. 20 points :,)
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