Which of the following is a chemical change? a. ice melting b. ice being carved c. water boiling d. water breaking down into hydrogen and oxygen

The answer is D. Water breaking down into hydrogen and oxygen

HTH ^^

D water breaking down into hydrogen and oxygen

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper