Quiz Flashcards
List 5 indicators of a chemical change of matter
Change of colour Change of odour Bubbles Energy Precipitate is formed
List 2 indicators of a physical change of matter
It is a change of state
Or folding, cutting, mixing
What is quantitative
Measuring
What is qualitative
5 senses
What is matter
Anything that has mass or takes up space
What is a heterogeneous mixture
Mixture but being able to see each pure substance
What is a compound
A compound is a substance made up of two or more elements that are chemically combined
What is an element
A pure substance made of only one kind of atom
What is a solid
Solids have a definite volume and shape
What is a liquid
A liquid has a definite volume but no shape
Liquid to solid and solid to liquid
Freezing and Melting
Liquid to gas and gas to liquid
Evaporation and Condensation
Solid to gas and gas to solid
Sublimation and Desublimation
What is the definition of physical change
A physical change is a change in a substance that DOES NOT make a new substance
What is the definition of a chemical change
A change in which one or more new substances are produced
You can’t get the original substance back
What is gas
Gas has variable shape and volume
What is Reactivity
Some materials will react with various substances
Or two substances will react together to make a new substance
Acids, bases, and water
What is Combustibility
The ability of a substance to burn in air
What is Stability
The ability of a substance to remain uncharged
What is Toxicity
The ability of a substance to cause harmful effects in plants and animals
What does the Mohs scale measure
It measures hardness
How is density measured
g/cm3
Categories of physical properties
Hardness
Malleability
Ductility
Lustre
What does filtration separation
Filtration is a method for separating an insoluble solid from a liquid
