Particles in a gas are far apart relative to their size. This property would explain which property of gases compared to other states of matter?

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

How much energy is made when a pice of wood burns. how do you know

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?