Que cambios son fisicos y cuales son quimicos? ?
a) quemar papel
b) limpiar objetos de plata
c) hacer hielo en el congelador
d) fundir hierro

The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll

Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?

Which states of matter have particles that move independently of one another with very little attraction?