For each of the following balanced equations, write the oxidation number above the symbol of each atom that changes oxidation state in the course of the reaction. (a) N2O4(g) 1 KCl(s) 88n NOCl(g) 1 KNO3(s) (b) H2S(g) 1 4 O2F2(s) 88n SF6(g) 1 2 HF(g) 1 4 O2(g) (c) 2 POBr3(s) 1 3 Mg(s) 88n 2 PO(s) 1 3 MgBr2(s) (d) 4 BCl3(g) 1 3 SF4(g) 88n 4 BF3(g) 1 3 SCl2(,) 1 3 Cl2(g)

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101