Chapter 1 Flashcards
What is matter?
anything that has mass and occupies space
What are atoms?
building blocks of matter
What are molecules?
2 or more atoms joined together
What is the relationship between atoms and elements?
elements are composed of a unique kind of atom
What does “properties” mean?
description of matter that allows us to distinguish different types of matter
What are the 2 types of properties?
physical and chemical
What are the monoatomic elements?
noble gases
What are the diatomic molecules?
H, N, F, O, I, Cl, Br
How are heterogenous mixtures separated?
filtration
How are homogenous mixtures separated?
distillation
What does chemistry mean?
study of matter, its properties, adn the changes that matter undergoes
What is physical properties?
can be observed or measured without changing the composition OR the identity of the substance
What are the 2 types of physical properties?
intensive and extensive
What is an extensive physical property?
physical property that depends on the amount of substance; ie: weight or volume
What is an intensive physical property?
physical property that is independent on the amount of substance; ie: boiling/freezing pt, density, color, smell, hardness