Master Chemistry with Fun Quizzes & Brain Teasers!

A lead fishing weight of 39.7g is submerged in a graduated cylinder of water containing 75.0mL of water. The water level will increase to what volume in the cylinder?
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PLEASE HELP! DUE IN 5 MINUTES! ( 10 points )An atom of gold with 79 protons, 79 Electrons and 118 neutrons would have a mass number of....A) 39B) 158C) 197D) 276
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The nucleus of an atom is _______________________ charged.
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if a baseball player hits a baseball from 4 feet off the ground with an initial velocity of 64 feet per second, how long will it take the baseball to hit the ground? use the equation h= -16t^2+4t + 4 round your answer to the nearest tenth hundredth
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If there was an airplane that went 2,000 miles in 3.5 hours. Find the average speed
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what can you infer about an ion that has a negative charge? I NEED HELP FAST FOR MY TEST!!!
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Ok this is the last one.
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which element would most likely be a shiny solid at room temperature and a good conductor of electricity?a. Cob. I c. F d. Cl
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Which option is an example of a chemical property?A. boiling pointB. ability to react with oxygenC. colorD. density
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if u trust urself do it! (not sponsored by nike)Which is one factor that contributes to the formation of polar, temperate, and tropical zones?the angle of the Suns raysthe direction of seasonal windsthe presence of prevailing windsthe movement of wind near a mountain
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(13 POINTS + BRAINLIEST) On a hot and windy day a farmer is cleared all the grasses from a field next to a stream in order to plant some crops. He worked all day removing the grasses, and planting seeds for his next crop. The next day the farmer noticed that half of his field had eroded away. What choice below best describes why the river was able to erode so much of the field?A.The wind blew the freshly cleared dirt in the field away.B.The river was eroded the ground since the grasses and roots were removed.C.Animals dug into the freshly cleared dirt looking for food.D.The hot temperatures caused the ground to crack and fall apart.
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Assume that the pendulum clock shown in the photograph is a closedsystemWhich statement describes evidence that the pendulum's energy is conservedeven as it eventually stops moving?A. Energy must be added to the pendulum to keep it from slowingdownB. Some of the clock's matter is transformed into new energyC. The amount of each type of energy in the system can bemeasuredD. All its mechanical energy is transformed into other forms ofenergy
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PLEASE HELP!! 74 POINTSAn igneous rock has small, dark crystals. Which statement also accurately describes this rock?It is an intrusive rock.It has a coarse texture.It was found on Earths surface.It was formed from slow cooling.---------------------------------------------------------Which is one factor that contributes to the formation of polar, temperate, and tropical zones?the angle of the Suns raysthe direction of seasonal windsthe presence of prevailing windsthe movement of wind near a mountain
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which element would have properties most like arsenic (As)? Te Ge P Se
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A chemist measured the amount of calcium sulfide produced during an experiment. She finds that of calcium sulfide is produced. Calculate the number of moles of calcium sulfide produced.
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How do the molecules in a solid behave?
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Explain what happened to the electrons in the elements when you exposed them to the flame. *please help
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NEEEDDDD HELP ASAP PLZ PLZ PLZ PLZ PLZ HELP ME
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How many total atoms of element X are represented below?
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Please answer correctly..will give the brainliest!Urgent!!!
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Alkali metals, such as potassium, must be transported in special sealed containers because they have the ability to burn or explode upon contact with water due to their high reactivity. This is an example of a __________.
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An intravenous solution contains 2.5 mEq/L of magnesium ions. How many moles of magnesium are in 750 mL of this solution?
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? divided by 230 equals 273.1PLZ HELP I NEED IT
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What pair of elements have the same number of valence electrons?a) Li and Na b) Mg and Kc) Ti and Nb d) Rb and Zr
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