Table of Contents
What can cut through atoms?
Since knives are made out of atoms, they can’t cut atoms. Only some specific elements of atoms (and even then only specific isotopes) can do this, and it happens when they are struck by neutrons, which are particles smaller than an atom.
What is matter mostly made up of?
All matter is made up of tiny particles called atoms. Matter takes on different forms depending on how the atoms are arranged. We call these forms “states of matter”. On Earth, the most common states are solids, liquids, and gases.
What are molecules compared to?
Difference Between an Atom and Molecule
Atom | Molecule | |
---|---|---|
Definition | Single entity | Made of two or more atoms |
Structure | Made of protons, neutrons, electrons | Made of multiple atoms bonded together |
Stability | Not stable | Stable |
Chemical Reactions | Can’t be separated by chemical reactions | Can be separated by chemical reactions |
What is the physics of cutting?
First of all, Cutting is the phenomenon of applying increasing or constant (high) pressure over a small area of an object where the stress applied (both compression and shearing) overcomes the ultimate tensile strength of the object at that particular area. (Friction between solids also play a major role here).
What is an atom made up of?
It is composed of protons, which have a positive charge, and neutrons, which have no charge. Protons, neutrons, and the electrons surrounding them are long-lived particles present in all ordinary, naturally occurring atoms.
What is all matter made up of atoms?
[Explanation] Idea a: All matter is made up of particles called atoms and molecules (as opposed to being continuous or just including particles). On the following page, the idea is stated as one of four concepts in Dalton’s theory: “All matter is composed of tiny, indivisible particles called atoms” (p. 158s).
How are atoms formed?
Atoms were created after the Big Bang 13.7 billion years ago. As the hot, dense new universe cooled, conditions became suitable for quarks and electrons to form. Quarks came together to form protons and neutrons, and these particles combined into nuclei.
What is cutting on a molecular level?
You are separating molecules of whatever substance you’re cutting, but their individual atoms remain intact.
How do knives cut?
The handle or back of the blade has a large area compared to the fine edge. This concentration of applied force onto the small edge area increases the pressure exerted by the edge. It is this high pressure that allows a blade to cut through a material by breaking the bonds between the molecules/crystals/fibers/etc.
How to slice tomatoes properly?
Place the tomato on its side so that the top of the tomato (where the stem is/was) should face the knife. Firmly hold down the tomato and slice off the top of the tomato. Continue slicing the tomato. Each slicing motion should be parallel to the last one. The thickness of each slice is up to you. Cut tomatoes into slices, as described above.
How do you cut a tomato in half with a knife?
Place the tomato on the cutting board, top side facing up. The bottom should be on the cutting board. Place the knife across the top. Slice once to create two halves. Place one half on the cutting board, cut side down. Note where the stem was. Slice in half, cutting from top to bottom.
Why do Tomatoes burst open when you cut them?
Tomatoes grow down from the stem, creating a series of cavities around a soft core. This core holds the cavities together, which keeps the seeds and juicy pulp in place. A tomato cut into slices parallel to the core will burst open; large sections of pulp will fall out of the tomato slices once cut.
How do you flatten the top of a tomato?
Place the tomato on its head. Now that the core is removed, your tomato will have a flatter top. Turn your tomato upside down so that it faces the cutting board and gives you a stable base. Cut the tomato in half.