What is the chemical context of life?

The Chemical Context of Life. Matter consists of chemical elements in pure form and in combinations called compounds; living organisms are made of matter. Matter — Anything that takes up space and has mass.

What type of bond is seen in 02 explain what this means?

What type of bond is seen in O2? Explain what this means. Double covalent bond. Two oxygen atoms form a molecule by sharing two pairs of valence electrons.

Why does a boy at the top of a slide have more potential energy?

Potential energy is the energy that matter possesses because of its location or structure. The boy at the top of the slide has more potential energy because of its location. The electron in the third energy shell has more potential energy because of its relative distance from the nucleus.

What are the 4 elements that make up 96 of all living matter?

Four elements—carbon (C), oxygen (O), hydrogen (H), and nitrogen (N)—make up 96% of living matter. Most of the remaining 4% of an organism’s weight consists of phosphorus (P), sulfur (S), calcium (Ca), and potassium (K). Trace elements are required by an organism but only in minute quantities.

What are the four elements that make up the bulk of living matter?

In all living systems we can always find 4 basic elements: carbon, oxygen, nitrogen and hydrogen. Carbon is the basic building unit contained in living matter. The percentage of carbon in the mass of living matter is 19.4 %.

What is the meaning of polar bond?

A bond formed between two atoms with a difference in electronegativities by sharing electrons is called a polar covalent bond.

What kind of bond does O2 have?

O2 is a covalent molecule because each oxygen atom needs two valence electrons to complete its octet. To meet this need, each oxygen atom shares two of its electrons with the other oxygen forming a strong oxygen-oxygen double shared covalent bond.

How is electrical energy produced from potential and kinetic energy?

They produce electrical energy via a chemical reaction that occurs when positive and negative charges are separated. When you turn on a battery-operated device, its potential energy stores of chemical and electrical energy are released and become other kinetic energy forms.

Which description is an example of gravitational potential energy transforming into kinetic energy?

When something is lifted, work is done on the object against the pull of gravity. This work is converted to a form of potential energy called gravitational potential energy. When the item falls towards Earth like an apple from a tree, gravitational potential energy is converted into kinetic energy.

What is the function of vitamin and mineral?

Vitamin and minerals are essential for bodily functions such as helping to fight infection, aid wound healing, make our bones strong and regulate hormones. Vitamins and minerals can cause toxicity if consumed in large amounts.

What is the difference between minerals and trace minerals?

These two terms refer to how much of the mineral is needed in the diet and also by how much is present in the human body. Major minerals are needed in amounts greater than 100 mg per day; whereas Trace minerals are needed in amounts less than 100 mg per day.