## Will the density of water change depending on how much water you have?

The density of water can also be affected by temperature. When the same amount of water is heated or cooled, its density changes. When the water is heated, it expands, increasing in volume.

## Why does density change with different substances?

Explain to students that each substance has its own density because of the atoms and molecules it is made from. The difference in density between different metals is usually bsed on the size and the mass of the atoms but the arrangement of the atoms in most metals is mostly the same.

## Can two different solids have the same density?

Because mass and volume are independent, two objects with the same volume can have different masses. Therefore, the objects can have different densities. However, if two objects have the same mass and volume, they will have the same density.

## Does more water mean more density?

Density is the mass of any material per unit volume. Gases always have much lower density than the condensed phases. Most materials have a lower density of the liquid than the solid but this isn’t always true. Water has a higher density in the liquid state than the solid, so ice cubes float.

## What is the minimum density of water?

Water density changes with temperature and salinity. Density is measured as mass (g) per unit of volume (cm³). Water is densest at 3.98°C and is least dense at 0°C (freezing point).

## Does the water density changes?

The density of water is roughly 1 gram per milliliter but, this changes with temperature or if there are substances dissolved in it. Ice is less dense than liquid water which is why your ice cubes float in your glass.

## Can 2 liquids have the same density?

Density is an intensive property, which means that it doesn’t depend on the amount of the substance present. If two liquids have the same density, then any volume of the first substance will have the same density as any volume of the second substance. Changing the volume of a substance doesn’t change the density.

## Is it true that scientists can use the measure of density to tell if something will float?

Since different substances have different densities, scientists can measure the density of a substance to identify the substance. They can also use the measure of density to find out if the substance will sink or float. This happens because oil is less dense than vinegar.

## How is the density of water always the same?

Then they measure the mass of different volumes of water and discover that the density is always the same. Students make a graph of the relationship between the volume and the mass of water. Students will be able to measure the volume and mass of water and calculate its density.

## Which is denser a solid or a liquid?

Unlike most substances, water is denser as a liquid than as a solid. A consequence is that ice floats on water. Also, pure water is less dense than seawater, so fresh water can float on top of salt water, mixing at the interface. Density depends on temperature and pressure.

## What happens if an object weighs more than equal volume of water?

Students should realize that if an object weighs more than an equal volume of water, it is more dense and will sink, and if it weighs less than an equal volume of water, it is less dense and will float. Remember that the density of water is about 1 g/cm 3.

Remember the all-important equation: density = mass ÷ volume. Based on this equation, if the weight (or mass) of something increases but the volume stays the same, then density goes up. Likewise, if the mass decreases but the volume stays the same, then density goes down. Lighter liquids (like water or vegetable oil)…