 So this time we're going to do it without using the shopping bag analogy, so this time we're trying to do it in our head We're going to still write down our numbers of atoms that we have, but we're going to do it in a slightly different way So we're not going to use fruit or shopping bags So this is our equation here. We've got titanium chloride reacting with water To produce titanium dioxide and hydrochloric acid So the first thing I'm going to do is I'm going to write down how many of each of the elements I have Okay, so on this side. I've got one titanium. There's no number after that. So I've got one I've got four chlorines on this side. So I'm going to write down four I've got two hydrogens. So a little two there means I have two of that in front So two hydrogens and I've got one oxygen over here. So I'm going to write down one oxygen on the other side I've got one titanium. So write that down. I've got two oxygens So I'll put that down at the bottom. I've got one hydrogen and I've got one chlorine All right, so immediately I can see I've got some problems. So my numbers of chlorine, hydrogen and oxygen are all off First thing I'm going to ask myself is what is the limiting factor? And I'm going to look at the hydrochloric acid over here. I've got one hydrochloric acid on this side I've got four. So what I'm going to do is I'm going to change that one to four. Okay, so next page So what I'm going to do is I'm going to put a four out the front here because That's the first that's the thing that I think is the most limiting factor in the moment So if I do my count up again on this side, I've got one. I've got four I've got two and I've got one now if we go on this side. I've still got one titanium It's still got two oxygens on this side. So that's not right But now I've got a big number four out the front. So I've changed my number of shopping bags over here So now I've got four hydrogens. So put that down here And I've got four chlorines because the big number out the front you means you have that of everything that's following So now I've got four chlorines Now we're starting to look a bit better. Now we need to look at what we're going to do with the other side If we look on the other side over here, we can see that we don't have enough hydrogens We don't have enough oxygens. So what I can do is I can change that number So if we go to the next page, so what I did is I put four there Now I'm going to double this one. So now let's do a count up Because that way I think I'll get the right number of hydrogens and oxygens on both sides So on this side, I've got one titanium. I've got four chlorines Now if I look at my number of hydrogens, I've got two times two. So now I've got four in total hydrogens And I've got two oxygens If I go to the other side of the arrow, I've got one titanium here I've got two oxygens there I've got four hydrogens here And I've got four chlorines here And now we're balanced. So to finish that one off One titanium chloride molecule reacts with two water molecules to produce one titanium dioxide molecule and four hydrochloric acid molecules So now we're balanced because we've got the same number of each atom on both sides So there's an example that this is flipping science for today. See you later