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Science T1

QuestionAnswer
Define Elements Substances that are pure, atoms make up elements making them one of the smallest particles
Define Compound Forms when two or more elements combine chemically in the same proportions.
Heterogenous Mixture Has visible particles that settle out
Homogenous Mixture Same throughout (air is not a compound)
Physical Properties (8) Hardness, freezing, boiling, evaporation, conduct heat/electricity, magnetism, and dissolve.
Evidence of Physical Change (3) Change in shape, change in state of matter, and dissolve.
Physical Property Can use senses
Chemical Property Changes into new substance
Chemical Properties (2) Flammability and reactivity
Evidence of Chemical Change (4) Bubbles, changes color, odor, and solid comes out of a solution.
Define Chomotagraphy Separates out colored substances
Define Filtration We used this separate sand from water
Define Evaporation Could be used to get salt out of water
Define Fractional Distillation Separate out two liquid with different boiling points
Law of Conservation of Mass/Matter Matter is neither lost nor gained
Law of Conservation of Mass/Matter Process Reactants --> Rxn Occurs --> Products
Balance out the equation: Ng2 + K = K + Ng Ng2 + K = K + 2Ng
Is this equation balanced? Cu4 + Au10 + Cu + K4 = (Cu)5 + (Au2) 5 Yes
Balance this equation: ____ Na3PO4 + ____ KOH --> ____ NaOH + ____ K3PO4 1 Na3PO4 + 3 KOH --> 3 NaOH + 1 K3PO4
Balance this equation: ____ BaS + ____ PtF2  ____ BaF2 + ____ PtS 1 BaS + 1 PtF2 --> 1 BaF2 + 1 PtS
Define Simple Distillation: Good for separating a liquid from a solution
Homogeneous or Heterogenous? Soda with Bubbles Heterogenous
Homogeneous or Heterogenous? Sugar Homogeneous
Homogeneous or Heterogenous? Oil Homogeneous
Homogeneous or Heterogenous? Italian Salad Dressing Heterogenous
Homogeneous or Heterogenous? Aluminum Foil Homogeneous
Homogeneous or Heterogenous? Beach Sand Heterogenous
Why does air not have a definite formula? It is not a compound
What is the correct order or obtaining salt from a mixture of sand and salt? Evaporation; filtration; dissolving in water
Created by: 16esmith