Chapter 1 In Class Flashcards
What are some physical properties? (9)
Appearance, Texture, Color, Odor, Melting Point, Boiling Point, Density, Solubility, and Polarity,
What are some Chemical Properties? (2)
Chemical composition and does it burn or not
Plus the “potential” to undergo some chemical change
Evidence of a chemical reaction? (5)
Gas produced Change in Color Precipitate forms Heat or flame produced Emission of light
Aqueous
Dissolved in water
Solid to Liquid to Gas
What makes a liquid into a solid?
What makes a liquid into a gas?
A liquid becomes a solid at its melting point.
A liquid becomes a gas at its boiling point.
Acronym for metric units?
King - Kilo Henry - Hecto Died - deka By - base unit (meter, liter, gram) Drinking - deca Chocolate - centi Milk - milli You (u) - micro kNow? - nano
Energy
the capacity to do work or supply heat
temperature
measure of amount of heat energy in an object
density
mass per unit volume
How do you know if an object floats or sinks?
An object will float if it is less dense than water (1 g/mL)
An object will sink if more dense than water (1 g/mL)
How to denote the density of solids?
g/cm^3
How to denote the density liquid?
g/mL
Physical Quantity
A physical quantity is a physical property that can be measured, it consists of a number plus a unit
Pure Substance
A substance that has a uniform chemical composition throughout.
Mixture
A blend of two or more substances, each of which retains its chemical identity.
Homogeneous Mixture
A uniform mixture that has the same composition throughout.
Heterogeneous Mixture
A non-uniform mixture that has regions of different composition.
Element
A fundamental substance that cannot be broken down chemically into any simpler substances.
Chemical Compound
A pure substance that can be broken down into simpler substances by chemical reactions.
Properties of Metal (4)
Shiny
Good conductors of electricity
Ductile (draw into wires)
Malleable (easily be hammered into thin sheets)
Properties of Nonmetals (4)
Not shiny
Doesn’t conduct electricity
Non ductile
Not malleable
Properties of Metalloids
Cross between metals and nonmetals
Only partially conduct electricity
