“____” of shared electrons detailed discussion to follow … 3 Electronegativity and Types of Bonds Q: Why do we see the different types of bonding? A: Electronegativity difference. Electronegativity (EN) is: • The ability of an atom in a molecule to attract _________ in a bond to itself. • Has values ranging from 4.0 for fluorine (the ______ electronegative) to 0.7 for cesium and francium (the ______ electronegative). • The __________ in EN between two atoms determines what kind of
Premium Covalent bond Atom Chemical bond
carboxylation of dextran matrix which develops high negative-charged surface that contribute to bind large amount of ligands. However‚ the high negative-charged surface may increase the chance of non-specific binding of other stronger positively charged molecules causing false positive signals. Covalent bound with the ligand through the EDC/NHS activation process which provides excellent chemical stability and tight immobilization onto the chip. There are multiple linkers available onto the
Premium Protein Blood Isoelectric point
Gases Page 18 Q & A Page 19 Bibliography Page 20 Kinetic Theory of Molecules The kinetic theory of molecules describes the behavior of matter in terms of particles in motion. This theory makes these assumptions: 1. Gases are made up of particles with no defined volume but with a defined mass. In other words their volume is miniscule compared to the distance between themselves and other molecules. 2. Gas particles undergo no intermolecular attractions or repulsions. This assumption
Premium Temperature Gas Solid
1) Chemistry Review Key Terms: empirical knowledge theoretical knowledge law of conservation of mass coefficient chemical amount mole Key Concepts: Write chemical equations when given reactants and products (1.5‚ 1.6) Write balanced chemical equations (2.2‚ 2.3) Interpret balanced chemical equations in terms of chemical amount (in moles) (2.3) Convert between chemical amount and mass (2.4) Classify chemical reactions (2.5‚ 2.6) Predict the solubility of elements and ionic and
Premium Chemistry Chemical element Molecule
it has positively and negatively charged parts within each molecule. This gives it a strong attraction toward ions. The ions in some salts attract and form strong bonds with water molecules. These salts‚ when they have absorbed water‚ are called hydrates. Anhydrous salts are salts that can form hydrates but which have had all the water driven off‚ usually by heat. Hydrated salts are characterized by the number of moles of water molecules per mole of salt. Sample Calculations: Mass of hydrate=
Premium Molecule Water Chemistry
ii. Ions are held together by electrostatic force b. Covalent Bonding iii. Electrons are somehow shared iv. Electrons are attracted to nuclei (shared) II. Electronegativity c. The ability of an atom in a molecule to attract shared electrons to itself d. Measured on Pauling Scale e. Most electronegative: Fluorine. Then Oxygen. f. Depending on electronegativity of X and Y‚ there are 3 possibilities: v. X and Y have identical electronegativities
Premium Atom Electron Chemical bond
BASIC CHEMISTRY 1. What is the difference between being ionized and being polar? When ionized the atom will either lose or gain electrons. A polarized molecule has an overall neutral charge with positive and negative sides such as H2O. 2. Compare macromolecules to Monomers; complete the chart below Example of a Macromolecule | Corresponding Monomer | polysaccharide | monosaccharide | lipids | glycerol‚ fatty acid | protein | Amino acids | nucleic acid | necleotides
Premium Molecule Oxygen Atom
Module 2 Mass Spectroscopy [pic] [pic] Diagram of a mass spectrometer Stage 1: Ionisation The sample is injected as a vapour and the atoms are bombarded by fast moving electrons. This causes the molecule to fragment into two or more pieces. When a molecule or part thereof fragments‚ one portion would be positively charged while the second portion will be uncharged. All uncharged fragments are ultimately lost in the machine as mass spectrometers only work with positive ions. Stage 2: Acceleration
Premium Ion Electric charge Atom
wood into a fire place‚ the wood burns turning into ashes. Therefore‚ both physical and chemical properties have changed. A physical reaction is when a form of substance is changed but the substance stays the same. It rearranges the substance’s molecules but does not affect the internal structure. For example when frozen water turns into liquid. The water physically changed but the substance remained the same. Other examples are‚ crushing a soda can‚ or breaking a glass bottle. A physical change
Free Chemistry Chemical substance Chemical reaction
or molecule that is most important in determining its chemical properties is the Answer electron. Comments Correct!! Max Score: 5 Actual Score: 5 Question 5 What is the maximum number of electrons the innermost shell can hold? Answer 4 Comments The correct answer is: Two Max Score: 5 Actual Score: 0 Question 6 An atom becomes an ion when Answer it gains or loses electrons. Comments Correct!! Max Score: 5 Actual Score: 5 Question 7 The symbol 3CO2 represents Answer three molecules of carbon
Premium Oxygen Atom Hydrogen