What can you determine about an element if you only know its group number on the periodic table? A. The total number of protons and neutrons
B. The number of protons
C. The total number of electrons
D. The number of valance elctrons

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o → k + o2 (b) na + i2 → nai (c) cu(no3 )2 + naoh → cu(oh)2 + nano3 (d) kclo3 → kcl + o2 (e) ca(no3 )2 + hbr → cabr2 + hno3 (f) sn(oh)2 → sno + h2 o (g) p4 + n2 o → p4 o6 + n2 (h) fe + al2 (so4 )3 → feso4 + al (i) alcl3 + na2 co3 → al2 (co3 )3 + nacl (j) c3 h6 + o2 → co2 + h2 o

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled