Is ethanol thinner than water? Learn more physics! Well, I cannot speak for all kinds of alcohols, but the common ones (methanol, ethanol, and isopropyl alcohol) are a little less dense than water. All three of these have densities of about 0.79 g/cc at standard temperature and pressure, compared to 1.0 g/cc for water. Is […]

Does sulfate free shampoo dry out hair? A sulfate-free shampoo, however, won’t dry your hair out as much as a sulfate shampoo would. 2. Since sulfate-free shampoos and conditioners are so gentle, they’re less likely to wash away your hair dye. Is sulfate-free the same as color safe? The short answer is, yes—sulfate-free shampoos can […]

What is a mechanical definition? 1 : of or relating to machinery He has mechanical skill. 2 : made or operated by a machine a mechanical toy. 3 : done or produced as if by a machine Charles Wallace … started to walk in a strange, gliding, mechanical manner.— What is the definition of mechanical […]

What percent of energy is transferred to the next level in an energy pyramid? only 10 percent What percentage of energy at one level in an energy pyramid is available to the next level in the pyramid? about 10 percent What is the 10 rule in the energy pyramid? The 10% rule states that between […]

How do you solve systems of linear equations in two variables by graphing? How to solve a system of linear equations by graphing. Graph the first equation. Graph the second equation on the same rectangular coordinate system. Determine whether the lines intersect, are parallel, or are the same line. Identify the solution to the system. […]

What is the minimum energy colliding particles must have in order to react? The colliding particles must have enough energy for the collision to be successful or effective in producing a reaction. The minimum amount of energy for a collision to be successful is called the activation energy. What is the minimum energy for a […]

Is SrO an ionic compound? The ionic substance strontium oxide, SrO, forms from the reaction of strontium metal with molecular oxygen. Do ionic compounds have Lewis structures? Ionic Lewis Dot Structures. In an ionic bond, one atom looses all its outer electrons (leaving behind a filled inner shell) while another atom gains electron(s) to fill […]

Why is silver tarnishing a chemical change? The tarnish is actually the result of a chemical reaction between the silver and sulfur-containing substances in the air. The silver is actually combining with sulfur and forming silver sulfide. When a thin coating of silver sulfide forms on the surface of silver, it darkens the silver. Is […]

What happens to a wave as its wavelength gets shorter? So, if the wavelength of a light wave is shorter, that means that the frequency will be higher because one cycle can pass in a shorter amount of time. That means that longer wavelengths have a lower frequency. Conclusion: a longer wavelength means a lower […]

What are derived units examples? Examples of derived quantities and units Name Symbol Expression in terms of SI base units joule per square metre J/m2 kg⋅s−2 kilogram square metre kg⋅m2 m2⋅kg newton metre second per kilogram N⋅m⋅s/kg m2⋅s−1 watt per steradian W/sr m2⋅kg⋅s−3 What are derived units? A derived unit is a unit that results […]