What are the five characteristics of ionic compounds? Properties Shared by Ionic Compounds They form crystals. They have high melting points and high boiling points. They have higher enthalpies of fusion and vaporization than molecular compounds. They’re hard and brittle. They conduct electricity when they are dissolved in water. They’re good insulators. How can you […]
What happens when entropy decreases?
What happens when entropy decreases? The total entropy of a system either increases or remains constant in any process; it never decreases. For example, heat transfer cannot occur spontaneously from cold to hot, because entropy would decrease. Entropy is very different from energy. Entropy is not conserved but increases in all real processes. What causes […]
Is thermal energy the total kinetic energy of an object?
Is thermal energy the total kinetic energy of an object? Thermal energy is the total internal kinetic energy of an object due to the random motion of its atoms and molecules. It is sometimes confused with internal energy or thermodynamic energy. They consist of the sum of the internal kinetic energy (thermal energy) and the […]
What is the power of an appliance?
What is the power of an appliance? The power of an electrical appliance tells us how much electrical energy it transfers in a second. Power, P is measured in watts (W) where: 1 W = 1 J/s (joule/second). Appliances used for heating have a much higher rating than those used to produce light or sound. […]
Why does a straw look bigger in water?
What element is a good insulator?
What element is a good insulator? Examples of good conductors are sliver, tin, and lead. Good insulators contain 8 electrons which mean they are stable(noble gasses group 18). Insulators can’t be easily transported from one atom to another and nonmetals make good insulators. Three examples of good insulators are sulfur, silicon, and rubber. What makes […]
What are the features of a sedimentary rock?
What are the features of a sedimentary rock? Sedimentary rocks contain rounded grains in layers. The oldest layers are at the bottom and the youngest layers are at the top. Sedimentary rocks may contain fossils of animals and plants trapped in the sediments as the rock was formed. What type of minerals are found in […]
Are darkroom chemicals dangerous?
Are darkroom chemicals dangerous? The majority of chemicals used in the black and white darkroom are classified in the range of non-toxic to slightly toxic. However, black and white developers can be toxic, especially if when ingested or inhaled or when in contact with bare skin. Are the chemicals used to develop film Toxic? Most […]
How much horsepower does a barge have?
How much horsepower does a barge have? Power from their diesel engines ranges from 600 to over 10,000 horsepower. River barges also have flat bottoms and are usually 200′ long and 35′ wide. What is the most powerful tugboat in the world? FUN FACT: While the 309.6t bollard pull of the ALP Striker is surely […]
What is the most important element of history?
What is the most important element of history? Plot: The most important element. The sequence of events in a story. What are the 7 elements of history? Tips on Setting in Historical Fiction The most popular post on A Writer of History is about the 7 Elements of Historical Fiction: characters, dialogue, plot, conflict, theme, […]