1. which of the following is an example of a chemical element?
a. salt
b. water
c. sugar
d. sodium

2. where can you find a common homogenous mixture? *
a-salt
b-coffee
c-orange juice
d-granola mixture (trail mix)

Nan element’s square on the periodic table, the number with the greatest numerical value represents the

Elizabeth has two separate samples of the same substance. sample is in the liquid state, and the other is in the solid state. the two samples most likely differ in which property?

Idid a lab for chemistry where we put nails in a copper (ii) chloride solution. 1. why did the reaction stop? which reactant was used up? how do you know? 2. describe what was happening to the atoms of iron and copper during the reaction. what is this type of reaction called? 3. what would happen to the ratio of copper to iron if you had placed more nails in the beaker? if you had let the reaction go for less time? 4. what is the accepted ratio of copper atoms to iron atoms in this reaction? account for differences between your experimental value and the accepted value. write the balanced equation for the reaction.