00:01
So now we'll work on question twenty from chapter one.
00:07
In this problem, we're told to read the following descriptions of the element zing and indicate which are physical properties in which our chemical properties.
00:17
So let's go ahead and drop our how are you going to answer this? so we're gonna list physical and chemical properties, so the description is zinc mouth at four hundred twenty degrees celsius when zinc granules are added.
00:47
Today, sulfuric acid hydrogen is given off and the metal dissolves.
00:53
Zinc has a harness on most scale of twenty five and a density of seven point one three grams per centimeter.
01:01
Q.
01:02
At twenty five degrees celsius, it reacts slowly with oxygen, gas and elevated temperatures to form with zinc oxide.
01:11
So the question is, what have we what? we just read us a physical description of physical property and what is a chemical two.
01:18
So we're given descriptions such as silver and metal, and these here are physical properties because we're just looking at it and seen what it looks like.
01:32
Ah, we're told that melts at four hundred twenty degrees, which is a physical property because we're not involving a chemical change.
01:51
We're told it reacts with sulfuric acid, so this is definitely a chemical property.
02:05
The next were told about the hardness and density of it of the think...