Unit B | Topic 2 | Changes in matter and Properties of matter Flashcards
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Definition of:
Physical properties
Used to describe a substance
(physical appearance)
Definition of:
Chemical properties
Properties that can only be observed when the chemical composition of a substance is changed (and a new substance if formed)
Examples of physical properties
(You don’t have to name all of them)
- Mass
- Volume
- Color
- Luster
- Shape and Size
- Hardness
- Melting and boiling point
- Viscosity
- Density
Definition of:
Mass
The amount of matter in an object
Definition of:
Volume
The amount of space that an object takes up
Definition of:
Color
Visual quality determined by hue, saturation, and brightness or reflected light
Definition of:
Luster
How reflective a surface is
Definition of:
Shape and size
(p.s not really an actual question)
If you don’t know what shape and size is, may I suggest that you seek immediate mental health assistance
Definition of:
Melting point
The temperature at which a solid turns into a liquid
Definition of:
Boiling point
The temperature at which a liquid turns into a gas
True or false:
Melting or boiling points are state changes
True
Definition of:
Hardness
A materials ability to resist breaking
Definition of:
Viscosity
A liquids resistance to flow
(how easily it flows)
Definition of:
Solubility
A substances ability to be dissolved in a solvent to make a solution
Definition of:
Density
The amount of mass that is in a given volume
Definition of:
Qualitative property
A characteristic of a substance that can be described
(quality)
Definition of:
Quantitative property
A characteristic of a substance that can be measured numerically
(quantity)
Examples of:
chemical properties
(you don’t have to name them all)
- Combustibility
- Flammability
- Reactivity
- Toxicity
- Radioactivity
- Oxidation
Definition of:
Combustibility
A measurement of how easily a substance catches on fire
Definition of:
Flammability
The ability of a chemical to burn or ignite
Definition of:
Reactivity
a measurement of how likely a substance is to undergo a chemical reaction
Definition of:
Toxicity
The ability of a substance to cause harm to an organism
Definition of:
Radioactivity
The ability for a substance to release energy from an unstable atom
Definition of:
Oxidation
A substances ability to lose electrons
Definition of:
Physical change
A substance changes FORM (NOT a chemical composition)
Definition of:
Chemical changes
Causes one or more new substances to be formed (possibly irriversable)
How can a physical change be identified?
(remember the 4 “S”)
> The substance stays the same chemically, but changes its physical form:
- Change of (S)hape
- Change of (S)tate
- Change of (S)ize
- Becomes a mixture or (S)olution
How can a chemical change be identified?
(remember “CTGPO”)
(Or try “chat GPT. CO”)
> The substance changes chemically:
- (C)olor change
- (T)emperature change
- (G)as
- bubbling or fizzing
- (P)recipitation
- Solid that forms in a liquid
- (O)dor
