No. Mass is better. The same amount of mass can occupy different volumes.
the quantity of matter the object contains
No. Mass is the amount of matter in an object, essentially how much "stuff" is in it. In 3-dimentional terms, volume is usually the best term for size.
When used as a size indicator, "nano" means that the object is so small that its size is best expressed in nanometers.
The measurement that best describes the results of a scientific experiment regarding volume would be by using gallons.
If the object is irregular the best way is to measure the volume of water it displaces when you immerse it completely in water.
I would use litres.
An altitude of a three-dimensional object refers to the vertical height of the object measured from its base to its topmost point. In the context of geometric shapes, such as a prism or pyramid, the altitude is the perpendicular distance from the base to the apex or top face. This measurement is crucial for determining the volume and surface area of the object.
Make a mold of the object and then fill the mold with water and measure the volume of the water.
If the object is irregular the best way is to measure the volume of water it displaces when you immerse it completely in water.
Grams (g)
An altitude of a three-dimensional object refers to the perpendicular distance from a specific point, often the base, to the highest point or vertex of the object. In the context of shapes like pyramids or cones, it is the length of the line segment that connects the apex to the base plane. This measurement is crucial for determining the volume and surface area of the object.
a way to describe how much matter there is in an object.