8thScience Fall Midterm Review Sheet

Comprehend the structure of molecules, including masses, electrical charges, and areas of protons, neutrons, and electrons.9790588235297>To locate the quantity of neutrons in a particle, take away the nuclear mass (adjusted to the closest entire number) less the nuclear (number of protons). Nuclear mass= nuclear number (protons) + neutronsKnow that protons decide an element’s personality and valence electrons decide its concoction properties, including reactivity.Know the distinction between and have the option to distinguish components and compounds.Be ready to think about metals, nonmetals and metalloids. Distinguish that every natural compound contain carbon. Decipher the course of action of the Periodic Table.GROUPeriodKnow that components inside a similar gathering (family) have comparative properties.Know the quantity of valence electrons for bunches 1, 2, and 13 †18.Be ready to decide the quantity of molecules of every component in concoction recipes containing subscripts.Know the confirmations of a chem ical response. Ex.- shading change, bubbles or effervescing, hasten is framed, new substance is shaped, smoke or fire, and surprising temperature change. The main sure approach to know whether a compound change happened is if another substance was shaped. Perceive whether a substance condition containing coefficients is adjusted or not and how that identifies with the law of preservation of mass.The law of protection of mass expresses that during a compound response, matter isn't made or decimated.