Match these items. 1 .
molecules
anything that takes up space
2 .
solid, liquid, gas
smallest bits of matter that exist without chemical change
3 .
atoms
basic building blocks of all matter
4 .
chemical elements
basic substances of nature, composed of atoms
5 .
matter
states of matter
6 .
ability to burn
amount of matter
7 .
color
physical property of matter
8 .
mass
chemical property of matter
9 .
matter and energy
conserved during changes
10 .
rock breaking
physical change in matter

it would be c. xylem.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

1. what is the relationship between the shape of an enzyme and the reactions they catalyze?

2. how does an enzyme inhibitor work?

separate your answers so i dont get confused : )