Learn how to calculate the mass of a gold earring step by step using volume and density. Perfect for kids and beginners. Get a hands-on demonstration with simple examples!
Imagine a gold earring as a small cube. Let's say this cube is 0.15 cubic centimeters big, like a tiny building block. Now, think of density as something called 'heaviness'. The density of gold is how heavy it is for every cubic centimeter of space it takes up. In this case, gold is very heavy, like a rock.
To find out how heavy our gold earring is, we need to know how much gold is packed into that small space. So, we multiply the volume of the earring (0.15 cubic centimeters) by the density of gold (18 grams per cubic centimeter). This will give us the total weight of the earring in grams.
When we multiply 0.15 by 18, we get 2.7 grams. This means our gold earring weighs 2.7 grams. It's like knowing how many grapes are in a small fruit basket.
If we want to be precise, we can round our answer to the tenths place. In this case, 2.7 grams rounded to the tenths place is 2.7 grams. So, the mass of our gold earring is 2.7 grams.
Remember, density is like how crowded a place is with people, and mass is how heavy something is. By multiplying volume and density, we can find out the mass of an object, like our tiny gold earring cub e. Congrats on learning this cool math trick!