What did Boyle’s experiments convince him about cold? That heat is a form of motion of a particular kind as bodies cool down the particles move less and less 5. How did Boyle explain that substances expand when they warm up? He thought back to his air experiments, and explained that the particles have spring like coils that expand as they heat 6. Describe the earliest alcohol thermometers.
A) double; covalent B) double; ionic C) single; covalent D) single; ionic E) triple; covalent 3. Which property could describe a covalent compound? A) It conducts electricity when melted. B) Has a low boiling point C) It is composed of a non-metal and a metal. D) It conducts electricity when dissolved in water.
Purpose: The reason for this lab is to find the specific heat of the given metal. The first law of thermodynamics states that matter (or energy) can not be created nor destroyed. In this experiment, water was heated with the metal in it then placed into water at room temperature. A heat change occurred showing that the heat from the metal was transferred through the water. This explains why energy cannot be created nor destroyed.
Exothermic and endothermic reactions. First law of thermodynamics and enthalpies of reactions. Calculate standard enthalpies of formations (using the equation on page 191). Electromagnetic radiation, photoelectric effect and continuous and line spectra. Energy levels and electron configurations (including representation using orbital diagrams) of several common elements on the periodic table.
Understandably, there is a need for nuclear power plants and the benefits they possess, but more power plants are not the answer needed to solve today’s environmental threats. In the article written in 2009, called Nuclear Power Is an Environmentally Unsound Way to Reduce Pollution, it states “no new nuclear plants could be completed before 2014 according to government estimates, and plants with genuinely advanced designs no earlier than 2025.”(Union of Concerned Scientists, 2009, p. 1) Building nuclear power plants also brings many other risks, such as where to store the radioactive waste and terrorist threats. The radioactive waste and terrorist threats are the same because the refined byproduct of radioactive
I visited the Griffith Observatory on Sunday November 16, 2014. During my visit I was able to observe the Tesla Coil demonstration developed by the late Nikola Tesla. Mr. Tesla designed the coil to someday transport electricity by air wirelessly and free. The energy would come from the magnetic field and atmosphere producing high-voltage, low-current, and high frequency alternating-current electricity. He had some success in his research but investors found it impractical and refused to support further research.
a Sketch a graph of the change in the radioactivity of the solution over time. b On the same axes, sketch a graph of the change in the radioactivity of the solid over time. AE2. a, b [pic] Q1. a By referring to the equilibrium: H2O(l) ( H2O(g) explain what is meant by the ‘dynamic nature’ of chemical equilibrium and why wet clothes in a closed laundry bag do not dry.
Two ionic compounds often react so that the positive and negative ions change places. For example, AgNO3 and NaCl will react to form AgCl and NaNO3. Predict the results of the reaction between barium carbonate and magnesium sulfate. Write the formulas and the names of the reactants and products. 3.
Faraday also discovered the electromagnetic waves when conducting an experiment that later on led to the invention of the electric motor. James Clark Maxwell worked with Faraday in his later year of life. Maxwell later on proved Faradays idea for electromagnetism. Maxwell on demonstrated light was a wave of electric and magnetic fields. Maxwell also discovered the speed of light and found out it is impossible to catch up with it.
The first inaccuracy comes from before the film even begins. K-19: The Widowmaker is mostly based on the nuclear meltdown of the submarine's core and the subsequent explosion that is avoided. The misconception with that, however, is that a nuclear meltdown alone will not cause a thermo-nuclear explosion (Kirby, 230). This causes a question to come to mind. What is the necessity for this change?