How is the number of electrons and protons related

C'est quoi homogène

Here is a "formula" for building a model airplane: 1 body + 2 wings + 4 jet engines + 1 tailpiece → 1 model airplane How many jet engines would be needed to make 24 model airplanes?

5. What happens in a condensation reaction? cross-linking of monomers head-to-tail joining of monomers side-by-side joining of monomers substitution of a halogen on monomers

3. You measure a cube and determine that its sides are 0.65m. You place the cube on a mass scale and determine that this cube has a mass of 10,500 grams. What is the density of this cube in units of kg/m3 and in units of g/mL?

A. describe where to look on the periodic table to find Elements which have similar reactivity and other properties. B. explain why they have similar properties C. name three elements that have those similarities.

Is MgCO3 a correct chemical formula

Water is an exaple of a mixture because it is made up of hydrogen and oxygen atoms bonded together true or false

Chlorine plus lithium bromide

What is the independent and dependent variable of the sentence" you decide to clean the bathroom. You notice that the shower is covered in a strange green slime. You decide to try to get rid of this slime by adding lemon juice.

M=40g V=31cm^3 what is the density