Question

Does ice float or sink in water?
From this, what do you understand about the density of water as a solid and as a liquid?​

Answer 1

$\huge\bf{\orange{\underline{Answer}}}$

➙$\large\bf{\pink{x+3y}}$

$\huge\bf{\blue{\underline{Solution}}}$

$\large\bf{\blue{\underline{Let's\: simplify\: step-by-step.}}}$

➙$\large\sf{(x+y)(2)−(x−y)}$

$\large\bf{\green{\underline{Distribute the Negative Sign:}}}$

➙$\large\sf{(x+y)(2)+−1(x−y)}$

➙$\large\sf{(x+y)(2)+−1x+−1(−y)}$

➙$\large\sf{(x+y)(2)+−x+y}$

$\large\bf{\red{\underline{Distribute:}}}$

➙$\large\sf{(x)(2)+(y)(2)+−x+y}$

➙$\large\sf{2x+2y+−x+y}$

$\large\bf{\red{\underline{Combine Like Terms:}}}$

➙$\large\sf{2x+2y+−x+y}$

➙$\large\bf{(2x+−x)+(2y+y)}$

➙$\large\sf{x+3y}$

Answer 2

Answer:

This tells us that ice has a lower density (is less compact) than liquid water, because the same mass of water spreads out and takes up more space when it is frozen. Therefore, when you place ice cubes in water, they will float at the surface.