What happens when you touch cold ice with your warm hand? a. heat only transfers from the ice to your hand b. heat only transfers from your hand to the ice c. heat transfers from the ice to your hand and from your hand to the ice d. heat does not transfer between the ice and your hand

Asmall amount of a solid is added to water. the observation made after fifteen minutes is shown in the figure. which of these solids has been probably added to water? a) oil b) sand c) sugar d) wood chips

Count the number of each type of atom in the equation below, and then balance the equation. write in the numbers of atoms and coefficients. add a 1 if there should be no coefficient. cs2(l) + o2(g) → co2(g) + so2(g) c [ ] s [ ] o > c [ ] s [ ] o [ ] cs2(l) + [ ] o2(g) > [ ] co2(g) + [ ] so2(g)

How do you know when a chemical reaction has occurred