You can use a simple balance.
Scales are measuring equipment to determine the mass of something
Mass is determined by weighing, so the piece of equipment is a scale.
manometer
a laboratory balance OR an analytical balance OR a spring scale OR any other kind of scale
It determines the mass of the substance per unit volume.
A scale
Scales are measuring equipment to determine the mass of something
You would determine its mass using a mass balance.
You would first determine the mass of the egg. Then you would need to determine the volume of the egg through water displacement. Then you would need to divide its mass by its volume, and that will give you the density.
You would weigh it on your kitchen scale
I would recomend measuring a pumpkin based on its mass, which can be found by weighing it (not that weight= mass, but weight can be used to determine mass as long as the pumpkin remains on Earth) You could also determine the volume by measuring how much water it displaces. I would stick to mass, though
Something to determine volume (like a bucket of water or a ruler), and a balance to determine mass. Divide the mass of the block by its volume to find the density of the block.
The best unit of measurement to determine the mass of a book is grams.
a tomato probably
You would first determine the mass of the egg. Then you would need to determine the volume of the egg through water displacement. Then you would need to divide its mass by its volume, and that will give you the density.
7protons and 7 neutrons
A litre is a measure of volume not mass. What substance you have a litre of would determine its mass.