Quizlet Flashcards
Matter
that which has mass and occupies space
Mass
the amount of matter in an object
Volume
the amount of 3-dimensional space occupied by an object
Pure substance
a sample of matter, either a single element or a single compound, that has definite chemical and physical properties
Compound
Elements combined in a fixed ratio
How many elements make up the world
any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
Mixture
a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding)
Homogeneous mixture
You can’t see the different arts
Heterogeneous mixture
You can see the parts
States of matter
the physical forms in which a substance can exist; states include solid, liquid, gas, and plasma
Solid
a state of matter that has definite shape and volume
Liquid
a state of matter that has definite volume but an indefinite shape (takes up the shape of the container)
Gas
a state of matter that has no definite volume or shape
Physical property
a characteristic that can be observed or measured without changing the identity of the substance
Chemical property
A characteristic of a pure substance that describes its ability to change into different substances
Density
the amount of matter in a given space (mass divided by volume)
Chemical reaction
a process in which one or more substances are changed into others
something that can not be broken into anything smaller
Oxygen gold
What is the smallest piece of matter called
An atom
How many types of atoms does it take to make an element
1 atom
When atoms combine by joining electrons blank are formed
chemical bond
What is a fixed ratio
The number of atoms that are always the same
Do you understand the atom
YES OR NO SERIOUSLY.
