Sharping a pencil leaves behind pencil shavings. Is sharpening pencil a physical or chemical change

How ca you determine if two molecules have ion-dipole force just by loking at it?

What is the coefficient for CO2?

Do you add water to acid or acid to water?

Write the formula used to convert degrees Celsius to kelvins

What international body of chemists has decided the name of 6 new elements?

Calculate the density of an object with a mass of 30g and volume of 6cm^3

What happens when light from the sun passes through any type of matter? the light slows down. the light speeds up. most of the light is absorbed. most of the light is reflected.

What is the chemical name for Fe (HCO3) 2

How are protons, electrons, and neutrons correctly compared

You compare two layers to a because the crust and upper mantle are solid