How many different kinds of particles are there in the world? explain your answer.
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Final answer:
There are 17 known types of elementary particles which include quarks, leptons, and force carriers. Composite particles, such as protons and neutrons, derived from these elementary particles, add to the variety of particles. The total count may change as our understanding of physics evolves.
Explanation:
When we talk about different kinds of particles in the world, we're usually referring to elementary particles, of which there are currently 17 types understood by scientists. These include six types of quarks, six types of leptons, and five types of force carriers (the photon, three types of W and Z bosons, and the gluon). Additionally, there is the Higgs boson, responsible for giving particles their mass. However, it's essential to also consider composite particles, such as protons and neutrons, made up from quarks. The exact number of particle types can be hard to quantify due to discoveries of new particles and our ever-evolving understanding of physics.
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Related Questions
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Why is it important to know your variables when conducting an investigatory problem ?
(2) double covalent bond that has 4 shared electrons
(3) triple covalent bond that has 6 shared electrons
(4) triple covalent bond that has 4 shared electrons
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Answer: Option (2) is the correct answer.
Explanation:
An alkene is a molecule that contains a hydrocarbon chain with atleast one double bond.
For example, is a 1-butene molecule and it contains one double bond that consists of four shared electrons.
On the other hand, a molecule of hydrocabon that contains a triple bond is known as an alkyne. Whereas a hydrocarbon that contains only single bonds is known as an alkane.
Thus, we can conclude that the multiple covalent bond in a molecule of 1-butene is a double covalent bond that has 4 shared electrons.
B. Chemical change
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B. Chemical Change.
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2.5 * Vi = 0.50 * 100.0
2.5 Vi = 50
Vi = 50 / 2.5
Vi = 20 mL
hope this helps!
Answer:
20 milliliters
Explanation:
I don't cap
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142.04 g -------------- 6.02x10²³ atoms
?? g ------------------ 7.4x10²³ atoms
142.04 x ( 7.4x10²³) / 6.02x10²³
=> 174.60 g
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The answer would be:
Pure substance: specifically a compound
Pure substances can be categorized into compounds and elements. A compound is a pure substance that cannot be broken down physically, but it can be broken down through chemical means. It is this property that differentiates it from mixtures. Mixtures can be broken down by physical and/or chemical means.
Elements on the other hand, cannot be broken down at all because it is in its simplest form and is also considered as a pure substance.
Answer:
Pure substance
Explanation:
Matter can be broadly classified into two categories: Pure substances and Mixtures (homogenous and heterogenous mixtures).
The simplest form of a pure substance is an element which cannot be broken down any further. When two or more elements combine, they form a compound which is also a pure substance. Thus, pure substances are systems that are either composed of a single type of element or a single type of molecule.
For example salt (NaCl) is a compound which is composed of elements: sodium (Na) and chlorine (Cl). These elements (in fact ions, Na+ and Cl-) are held together by a chemical bond. Thus, a pure substance like NaCl can be broken down into its elements through chemical means.
The unknown substance in the given question can therefore be classified as a pure substance
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Energy released by system is absorbed by surroundings.