Subatomic Particles and the periodic table 1. The three particles and their properties An atom has no overall charge. The protons (positively charged) and neutrons (no charge) make up the nucleus of an atom, and this is surrounded by negatively charged electrons. There are as many protons as electrons, so they balance each other out, creating a neutral relative charge on the atom. Neutrons, Protons and electrons are all sub-atomic particles.
Describe the differences between protons and electrons The difference between protons and electrons is that protons are positively charged and that elections are negatively charged. Another difference is that protons are in the nucleus and electrons circle the nucleus in shells outside the nucleus. What is the difference between the mass number and the relative atomic mass of an element? The difference between the mass number and the atomic mass is that the mass number is the number of protons and neutrons in the nucleus and the relative atomic mass is the mass of an atom. Distinguish between an element and a compound with 2 examples for each An element is a substance that cannot be broken down into any simpler substances.
It is measured during a resting metabolic rate assessment or calorie point. When you measure how much oxygen is inhaled and how much carbon dioxide is exhaled, the amount of carbohydrates and fat being burned can be measured. Our bodies are only able to use fat as a major fuel source when it’s able to get O2 into the cells. A person’s resting or moderately active respiratory quotient should be 0.7 to 1.0. When we do intense workouts our ratio increases about 1.0, thus making our bodies work anaerobically (this means without O2).
A molecule in which the central atom forms three single bonds and has one lone pair is said to have a ________ shape. A) bent B) linear C) planar D) pyramidal E) tetrahedral 8. A bond where the electrons are shared equally is called a(an) ________ bond. A) polar covalent B) coordinate covalent C) nonpolar covalent D) ionic E) none of the above 9. In a precipitation reaction the insoluble product can be identified by the symbol ________.
The electrons of an atom are bound to the nucleus by the electromagnetic force. A group of atoms can remain bound to each other by chemical bonds based on the same force, forming a molecule. An atom containing an equal number of protons and electrons is neutral; otherwise it is positively or negatively charged and is known as an ion. An atom is classified according to the number of protons and neutrons in its nucleus the number of protons controls the element, and the number of neutrons determines the isotope of the element. A molecule is an electrically neutral group of two or more atoms held together by chemical bonds Molecules are recognized from ions by their lack of
An ionic bond is the transfer of valence electrons between atoms. It is a type of chemical bond that creates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, the non-metal accepts those electrons to become a negatively charged anion. Ionic bonds require an electron donor, metal, and an electron acceptor, nonmetal. By losing those electrons, these metals can achieve noble-gas configuration and satisfy the octet rule.
P5: Explain the concept of homeostasis. M2: Discuss the probable homeostatic responses to changes in the internal environment during exercise D2: Evaluate the importance of homeostasis in maintaining the healthy functioning of the body Homeostasis is the process the body takes to keep the body in balance and ensures that there is a stable environment in which cells can function. Enzymes control the chemical processes in the body, these can be stopped, slowed down or sped up, when required if there are changes in the body, if the internal body systems aren’t maintain within a reasonable range the enzymes won’t be able to work. Different body systems work together to maintain efficient body functions. Homeostasis mechanisms control the body temperature, breathing rate, heart rate, blood glucose levels and many more.
Although, Ionic bonding is when an atom gives away elections to another atom, which only happens in a metal and a nonmetal, and they have high melting points and are soluble. By investigating the unknown
If you don’t take enough calcium trough food, you need Kirkland Signature Calcium. What is " Kirkland Signature Calcium. " (150 words) Calcium plays an important role in the human body. He is an enzyme activator, is responsible for the implementation of bioelectrical impulses, affects blood clotting, muscle spasms, as well as the production of hormones. It is a building block of bones and teeth, which transmits nerve
Protein is needed in the diet for growth and repair of the body. Protein protects the body form infections and disease. Protein is also a good source of some vitamins and minerals. The best foods to be included in the diet to get protein into your body would be dairy products, meat, fish and eggs. Carbohydrates is needed in the diet for energy and warmth, once there is carbohydrates in the body it keep us going throughout the day.