Matter and Energy Flashcards
Is a characteristics of a substance that can be observed without changing the basic idenity of the substance
Physical Property
Physical Property
Are inherent to a substance and do not depend on the amount of the subtance present
Intrinsic properties
Physical property
Depend on the amount of the substance present and can change when the quantity of the material changes
Extrinsic properties
Is a characteristic of a substance that describes the way the substance undergoes or resists change to form a new substance
Chemical Property
A process in which a substance changes its physcial appearance but not its chemical composition
Physical change
A process in which a substance undergoes a change in chemical composition
Chemical change
The combining substances
Reactants
Substances formed
Products
Phase Changes in Matter
Solid to liquid
Melting
Phase Changes in Matter
Liquid to solid
Freezing or Solidification
Phase Changes in Matter
Liquid to gas
Evaporation
Phase Changes in Matter
Gas to liquid
Condensation
Phase Changes in Matter
Solid to gas
Sublimation
Phase Changes in Matter
Gas to solid
Deposition
is a single kind of matter that cannot be separated into other kinds of matter by any physical means
Pure Substance
Classification of elements
Physical properties of Metals
5
- Usually solid at room temperature
- Ductile
- Malleable
- Good conductor of heat and electricity
- Show metallic luster when polish
Classification of elements
Chemical properties of Metals
3
- Combine with other metals to form an alloy
- React with non-metal to form ionic compound or salts
- Lose electron forming positive ion
Classification of elements
Physical properties of Non-metals
8
- Dull and cannot be polished
- Brittle
- Poor conductor of heat and electricity
- Low melting point
- Low densities
- Some are gases, liquids or solids at room temperature
- Low tensile strength
- Not sonorous
Classification of elements
Chemical properties of Non-metal
2
- Combine with non-metal to form covalent compounds
- Gain electrons forming a negative ion
Classification of elements
Properties of Metaloids
- Have properties that lie between metals and non-metals
- Often look like metal but are brittle like non-metal
- Poor conductors of electricity but their conductivity increases as temperature rises
Is a pure substance that can be broken down into two or more simpler pure substance by chemical means
Compound
The difference between Organic and Inorganic Compounds
Organic contains carbon while Inorganic doesnt
Classification of Compounds
Substances that dontate protons when dissolved in water
Acids
Classification of Compounds
Are substances that accept protons or donate hydroxide ions in solution
Bases
Classification of Compounds
are ionic compounds formed from the neutralization reaction between an acid and a base
Salts
Classification of Compounds
are compounds that contain at least one oxygen aton and one other element
Oxides
Is a physical combination of two or more pure substances in which each substance retains its own chemical idenity
Mixture
Properties of Mixture
The composition is uniform throughout
Homogeneity
Properties of Mixture
Less than 1 nanometer (nm)
Particle Size
Properties of Mixture
Particles are not visible, even under a microscope
Visibility
Properties of Mixture
Solutions are stable and the solute does not settle out over time
Stability
Properties of Mixture
Solute particles cannot be separated
Filtration
are heterogeneous mixtures where the particle size is intermediate between those in solutions are suspensions
Colloids
are heterogenous mixtures where the particles are large enough to eventially settle out
Suspensions
