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4269475
Science Midterm
Descripción
Mapa Mental sobre Science Midterm, creado por Legogirl3000 el 04/01/2016.
Mapa Mental por
Legogirl3000
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Resumen del Recurso
Science Midterm
Scientific Method
Steps:
Purpose
Research
Hypothesis
Design the exparement
Analysis
Conclusion
Read science Fair packet for correct way to write each in report
Chapter 21-Substances, mixtures, and soulubility
Differences between substances and mixtures
Substances
Combounds and elements
Mixtures
A Mixture of substances
Homogeneous mixtures
Also Known as solotions
cannot see different materials Mixed to molecular scale
can be seperated by chemical means
Heterogeneous mixtures
Can see different substances
Can be seperated by phisical means
Solution
Solutes
Substances that dissoves
Solvents
Dissolves Solutes
The larger amount in Solution
State of matter of solution is usually same as the solvent
Aqueous solutions have water as the solvent
Water Molucule
Water is a Molecular compound
It can dissolve both ionic and molecular compound
it dissolve molecular compounds as a group when it dissolves ionic bond atom by atom
Solubility
Measure of how much of a solute can dissolve in a certin amount of solvent
Solid - Liquid Solution
when temp. increases the solubiliy increases
Gas- liquid solutions
When temp. increase the solubiltiy decrease
When Pressure increases solubility decreases
Saturated solutions
a Solution that holds the total amount of solute that can be hold under the given solution
unsaturated solution
A solution that has not reached its max it can dissolve at the given condisions
Super Saturated solution
a solution that has more solute dissolve than it can under a given condision
Dissolving Rate
how quickly a substance dissolves.
3 factors that decrease the dissolve time are
Temp. (Hot vs cold, hot is faster)
Partical size(smaller is faster)
Mixing(more mixing is faster)
bonds
Covalent Bonds
Bonds that share e-
Polar
Share e- non-evemly
Non- Polar
Share e- evenly
Like dissolves like so polar dissolves polar and non polar dissolves non polar
Ionic Bonds
Bonds created when Atoms gain or loss e-
This makes them become positive or negative
So they become attracted to each other
Concentration
how much solute is present in a solution compared to the amount of solvent
Dilute
a solution that has a very low amount of solute compared to the amount of solvent
Concentrated
a solution that has a high amount of solute compared to the amount of solvent
Acid and bases
refer to chart on worksheet
pH
Refer to worksheet (back of acid and base sheet)
Indicators
substances that change color relating to pH
Chapter 8:Life's Structure and Classification
Part of the microscope
refer to worksheet and quiz
Six traits of all organisms
1. Organized in cells
2. Grow and develop
3. Respond to suroundings
4. Maintain homeostasis
5. Use energy
6. Can reproduce
three things all living things need to survive
1. Place to live
2. Water
3. Food Source
3 domains of living things
1. Bacteria
2. Archaebacteria
3. Eukanrota
Six Kingdoms
1. Eubacteria
2. Archbacteria
3. protista
4. Animal
5. Fungi
6. Plant
Classification system
Life
Domain
KIngdom
phylum
Class
order
Family
Genus
Species
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