The smallest unit of an element that still retains thedistinctive behavior of that element is an ________.a. electronb. atomc. elemental particled. isotope

Q: two atms of an element have the same number of  protons electrons plus neutrons protons plus…

A: Atoms are the smallest constituent unit of ordinary matter that has the properties of a chemical…

Q: A substance formed of crystals of equal numbers of cations and anions held together by ionic bonds…

A: Answer is b.)  salt.

Q: Which parts of an element do not vary in number?a. electronsb. neutronsc. protonsd. All of these…

A: Electrons are negatively charged. Protons are positively charged. Neutrons are neutral.

Q: Radiation is the emission and propagation of high speed electrons in an x-ray tube in the form of…

A: Introduction X-rays are a type of radiation called electromagnetic waves. X-ray imaging creates…

Q: lons are: a. atoms or molecules with unequal numbers of electrons and protons b. atoms or molecules…

A: Question - lons are -  a.) atoms or molecules with unequal numbers of electrons and protons b.)…

Q: Hydrogen bonds are formed as a result of which of the following?a. ionic bondsb. nonpolar covalent…

A: Bond is the link between molecules or atoms, bonds form due to the attraction between different…

Q: _____________contribute hydrogen ions (H+) to a solution.a. Basesb. Isotopesc. Acidsd. Compounds

A: Answer: Introduction: According to the Lowry-Bronsted definition, an acid is a substance which is a…

Q: Carbon is electroneutral because it has four electrons in it's valence shell true or false ?

A: The carbon element is known to have 4 electrons in its valence shell. The electronic configuration…

Q: A covalent bond forms whena. electrons are present in a valence shell.b. a valence electron is…

A: Answer is c.) a pair of valence electrons is sharef between two atoms.

Q: What is the smallest unit of an element that retains the properties of that element

A: An element is a pure product in chemistry that can not be broken down by chemical means, consisting…

Q: Arrange in order of increasing atomic size. (a) the period 2 elements Li, C, and F (b) the group…

A: According to the question, we have to arrange the following period or group elements in order of…

Q: On the periodic table of the elements, mercury (Hg) hasan atomic number of 80 and a mass number of…

A: Atom is the smallest unit of matter and it cannot be broken down into smaller units. It is the…

Q: Which is not a property of water? a. Low specific heat b. Hydrogen bonds form a lattice c.…

A: Water is a tasteless, colorless, odorless liquid, made up of two atoms of Hydrogen and one atom of…

Q: Question attached

A: All living organisms are made up of elements. The most commonly found elements are carbon, nitrogen,…

Q: Which of the following is a characteristic property of matter that could be used to identify an…

A: Physical and chemical qualities exist in all matter. Physical attributes, such as mass, colour, and…

Q: a certain element consists of two stable isotopes. the first has a mass of 138 amu

A: Atoms of an element having same atomic number but different mass number are called isotopes of that…

Q: 11H and 13H have (a) different chemical properties because they have different atomic numbers (b)…

A: The chemical properties of an element are not defined by the number of protons. Protons are…

Q: Covalent bonds involve_____ a)electrostatic attraction b)sharing electrons c)valence…

A: Bond polarity is the separation of electric charge across a bond, which makes the molecule to have…

Q: The atomic number gives thea. number of neutrons in the nucleus.b. number of protons in the…

A: An atom is defined as the smallest particle of an element. They constitute of neutrons, protons and…

Q: A carbon atom contains six protons and six neutrons.A. What are its atomic number and atomic…

A: CARBON - Carbon is a chemical element with the symbol C . It is nonmetallic and tetravalent—making…

Q: A free radiacal is  a) Any charged particel  b) An atom or molecule with unpaired electron in the…

A: Ans- b) An atom or molecule with an unpaired electron in the outer shell The free radical define as…

Q: Mobile phase can be :  A) Solid or liquid B) Only solid C) Only gas D) Liquid or gas

A: Chromatography is a technique that is used to separate different components of a mixture as a result…

Q: . A cation is a(n)a. uncharged atom.b. positively charged atom.c. negatively charged atom.d. atom…

A: A molecule is considered to be composed of two or more atoms having the same elements, which are…

Q: What is the charge of an electron? no charge O positive neutral negative

A: Electron are subatomic particle carries negative charge and proton carries positive charge while…

Q: This occurs when the cations and anions are attracted to the positive and negative ends of water…

A: The type of interaction where two molecules of opposite charge with each other i.e. a cation…

Q: stance which cannot be broken down by chemical means into simpler substa OA. Matter OB. A Mineral…

A: The periodic table is a display of all the discovered chemical elements in the form of a table for…

Q: Elements are.. O A pure substance When there is more than one atom O Made of two or more substances

A: The matter is made up of chemical substances that occupy space and it consists of a particular mass.…

Q: Electrons move around the nucleus of an atom in pathways calleda. shellsb. orbitalsc. circlesd.…

A: Electrons are negatively charged.

Q: If you add an electron to fluorine, what will result? A) a negatively charged anion O B) a different…

A: Anion: negatively charged ion. Cation: positively charged ion.

Q: A Determine how much sodium and similar elements are normally found in the human booy B. Determine…

A: Asked : Reason for element are safe for humans to consume from given options.

Q: A metal ion with a 2+ charge has 23 electrons and forms a compound with a halogen ion that contains…

A: As we know that atomic mass is the addition of proton and neutrons present in the nucleus, whereas…

Q: What atom has only one proton?a. hydrogen   d. a free radicalb. an isotope  e. a radioisotopec.…

A: Proton is the positivity charged particle found in the nucleus of atom,it is small in structure with…

Q: Oxygen has 8 protons, 8 neutrons, and 8 electrons. What is its atomic mass?(a) 8 (b) 16 (c) 24 (d)…

A: In the atmosphere, different elements, atoms, molecules are present like nitrogen, hydrogen, carbon,…

Q: A substance that has weight and occupies space is calleda. kinetic energy.b. a catalyst.c. matter.d.…

A: Chemistry is the branch of science that helps to study the structure, composition, and properties of…

Q: Which of the following statements is not true?a. Water is polar.b. Water stabilizes temperature.c.…

A: Water is a colorless, tasteless, odorless chemical substance which consists of hydrogen and oxygen…

Q: An isotope of sodium (Na) has a mass number of 22. How many neutrons does it have?a. 11b. 12c. 22d.…

A: Isotopes are members of a family of an element that all have the same number of protons but…

Q: ionic bonds involve_____ a)electrostatic attraction b)sharing electrons c)valence configuration

A: An attraction between molecules or atoms is termed as atomic or molecular bond. They are of many…

Q: Atomic absorption spectroscopy is usually more sensitive than atomic emission spectroscopy because…

A: In case of Atomic Emission Spectroscopy (AES), when energy is absorbed by electrons, the electrons…

Q: The characteristic that gives an element its distinctiveproperties is its number of ________.a.…

A: Elements are any substances that cannot be broken down or decomposed into simpler materials through…

Q: If a substance contains two or more elements of different types, it isconsidereda. a compoundb. a…

A: An "element" is a pure substance that made up of only one type of atom and cannot be broken down by…

Q: The smallest unit of matter with unique characteristics isa. an electronb. a moleculec. an atomd. a…

A: An electron is a negatively charged particle which could be derived after breaking the atoms. The…

Q: Which of the following elements is mismatched with its properties or function? (a) carbon—forms the…

A: Answer : All of the above are correctly matched.

Q: Which of the following bond/s results from a sharing of electron(s) between atoms ? [MA} ionic bond…

A: 1) Water:  it is essential for life. water is the most abundant substance in the living cell. It is…

Q: Element Characteristics Easy to bend and shape • Good conductor of heat • Good conductor of…

A: The metals are substances that has high conductivity and high electricity.

Q: Ammonia gas would be classified as (1) a compound (2) a mixture (3) an element (4) an atom

A: AMMONIA GAS IS CLASSIFIED AS COMPOUND.

Q: All ions have at least one ________ (select all that arecorrect).a. proton c. electronb. neutron d.…

A: An ion is an atom/molecule that has a charge (positive/negative/neutral). Protons are positively…

Q: OCCURS IN WATER WITI 1. cobalt 2. strontium 3. selenium 4. vanadium

A: Osteoarthritis, also known as degenerative joint disease (DJD), is one of the most common type of…

Q: Which element is a metal? A. C B. Rn C. CI D. Cr

A: The classification of chemicals into different groups and understanding their properties individual…

Nucleotides

It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). 

Nucleic Acids

Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.