Reviewer In Physical Science PDF

**REVIEWER IN PHYSICAL SCIENCE** **Activation rate** - the measure of the change in the concentration of the reactants or products. **Bent** - the geometrical shape of the water molecule. **Big Bang Nucleosynthesis** - the process responsible for the formation of light elements such as Hydrogen a...

**REVIEWER IN PHYSICAL SCIENCE** **Activation rate** - the measure of the change in the concentration of the reactants or products. **Bent** - the geometrical shape of the water molecule. **Big Bang Nucleosynthesis** - the process responsible for the formation of light elements such as Hydrogen and Helium. **Bigbang Theory** - most accepted theory about the formation of the universe that explains why it continues to expand. **Boiling Point** - the temperature at which the liquid starts to boil. **H-bonding** - is the reason why the boiling point of water is greater than that of dihydrogen sulfide. **Carbohydrates** - a organic molecule that is soluble in water and serves as a quick source of energy. **Carbon, Hydrogen and Oxygen** - elements that make up carbohydrates. **Carcinogen** - is a possible ingredient of a consumer product that causes cancer. **Catalysts** -increase the rate of reactions by lowering the activation energy without being consumed. **CCl**~**4**~ - the molecules has high melting point. **Chemical reaction** - a chemical change that occurs when two or more substances combine to form a new substance. **Chemical Reaction** - a chemical change that occurs when two or more substances combine to form a new substance. **Chemical reaction** - the Particles in the substance must collide and have enough energy. **Chlorine** - an active component of bleach can remove stains. **Cleaning product** - this can prevent the spread of infectious diseases and control allergens, such as dust and mold. **Concentration** - the number of particles present in a given volume or solution. **Concentration of reactant** - the factor directly affects the rate of a chemical reaction. **Concentration, Particle Size and Temperature** - affect the rate of chemical reaction. **Deoxyribonucleic acid (DNA)** - termed as the blueprint of life. Disinfectants - is used to kill pathogens on surfaces. **Distribution of elements and isotopes in the universe** - Hydrogen and helium are uniformly distributed, supporting Big Bang nucleosynthesis, while heavier elements are uneven due to stellar processes. \- The presence of hydrogen and helium as the most abundant elements in the universe supports the Big Bang nucleosynthesis model, while heavier elements like carbon and iron indicate stellar nucleosynthesis. **DNA** - Its double-helix structure allows it to store and replicate genetic information accurately. **Electronegativity** - refers to the ability of an atom in a molecule to attract shared electrons **Energy** - it can be converted in form, but not created nor destroyed. **Glucose** - is a monosaccharide found in dextrose. **Glycogen** - it is the storage form of excess glucose in the body, particularly in the liver and **H-bonding -- dipole-dipole -- London Forces** - the intermolecular forces of attraction (IMFA) that is arranged from strongest to weakest. **Hydrogen** - the lightest element and at the same time the most abundant in outer space. **Lipids** - a group of biomolecule do waxes that coat some organisms. \- fat, steroid and triglyceride. **London forces** - it is considered as the weakest in intermolecular forces of attraction (IMFA). **Mendeleev** - He created a classification of elements based on their atomic weight. muscles. **Non - renewable** - it is the energy that comes from sources that will run out or will not be replenished in our lifetimes---or even in many, many lifetimes. **Nucleic Acids** - a group of biomolecules carries and passes on the hereditary information of the organism. **Particle Accelerator** - It is a device that is used to speed up the protons to overcome the repulsion between the protons and the target atomic nuclei by using magnetic and electrical fields. **Polar Bonds** - may result to nonpolar covalent compounds depending on molecular geometry. **Polar Covalent Bond** - type of chemical bonds holds the atoms of water molecule together. **Polar Molecules** - Have high boiling point and high melting point **Protein and Lipid** - a biomolecules that are significant components of the cell membrane. **Rate of Reaction** - the measure of how fast or slow a reaction happens. **Reactant** - the substance or particles that enter into and is altered in the course of a chemical reaction. **Surface tension** -refers to the energy required to increase the surface area by a unit amount. **Temperature in Chemical reaction** - Higher temperatures increase the energy of the particles, leading to more effective collisions and a faster reaction rate. **They release stored energy from natural processes over millions of years, such as fossil fuels and uranium** - Key characteristic of nonrenewable energy sources. **Vinegar** - it dissolve most likely in water. **Viscous substance** - for example: blood, honey and syrup. **Water** - Has high surface tension, has low viscosity and has high boiling point **NOTE: Review the Balancing of Chemical Equation!**