When a 2 kg log is burned, it produces 0.5 kg of ash. Explain why the mass of the ash is less than the mass of the log. In other words, where did all of the mass go?

Which of the following is an example of sliding friction? Question 5 options: Rubbing sticks together to create a fire A marble rolling down a street Laying in bed reading a book Leaning against a rock to take a bre

An aerosol can of compressed air has the following warning label: "Warning: contents under pressure. Do not expose can to heat or flame. Do not crouch can. "Using what you know about volume, pressure and temperature, explain this warning

4 physical properties of a spoonful of sugar

Calculate wavelength in metres and nanometers of green light whose frequency is 5.7 x 10^14 Hz.

Define natural gas, liquefied petroleum gas (LPG), and liquefied natural gas (LNG). What three countries have most of the world's natural gas reserves?

What occurs in a chemical reaction? Products are formed from reactants by the breaking and forming of new bonds. Products are formed without chemical bonds being broken. Reactants are formed without chemical bonds being broken.

What information does the atomic mass of an element provide

The following diagram represents a vertical cross section of sedimentary rock layers that have not been overturned. Which principle best supports the conclusion that these layers have undergone extensive movement since deposition?

What kind of ions do a sodium atom and a chlorine atom become when a valence electron is transferred from one to the other?

NaOH and bleach have several characteristics in common. They include all BUT one of the characteristics listed.