What is anything that has mass and takes up space?
1) Weight
2) Volume
3) Density
4) Matter
When you measure the boiling point of mercury, you are investigating a ____.
1) Chemical change
2) Chemical property
3) Physical change
4) Physical property
An object weighing 90 N has a volume of 45mL and a mass of 9.0 g. What is its density?
1) 0.10 g/mL
2) 0.20 g/ mL
3) 5.0 g/ mL
4) 10 g/ mL
The correct answer for "What is anything that has mass and takes up space?" is option 4) Matter. Matter refers to anything that has mass and occupies space.
For "When you measure the boiling point of mercury, you are investigating a __?," the correct answer is 3) Physical change. The boiling point of a substance is a physical property, and the process of a substance changing from a liquid to a gas is a physical change.
To find the density in the given scenario where an object weighing 90 N has a volume of 45 mL and a mass of 9.0 g, you use the formula:
Density = mass/volume
Plugging in the values:
Density = 9.0 g / 45 mL
To calculate density, make sure the units are consistent. Here, we can convert mL to cm³, as 1 mL is equal to 1 cm³:
Density = 9.0 g / 45 cm³
Simplifying the expression:
Density = 0.2 g/cm³
Therefore, the correct answer is 2) 0.20 g/mL.
The answer for the first question is 4) Matter.
The answer for the second question is 4) Physical property.
To find the density of an object, you divide its mass by its volume. In this case, the mass is 9.0g and the volume is 45mL. So, the density is calculated as 9.0g / 45mL = 0.20 g/mL. Therefore, the answer is 2) 0.20 g/mL.
Q1. Matter.
Q3. Density = 9g/45mL = 0.2 g/mL.