discovered by Antoine Lavoisier

3 States of Matter

A homogenous mixture is also called a

means "uncuttable" or "unbreakable"

1oz=??g

is a measure of distance. The meter is the base unit.

is the energy transferred when a force exerted on an object causes a displacement of that object

is a mixture in which the composition is not uniform throughout the mixture.

1kg=??lbs

is any push or pull on an object.

a substance which can not be decomposed to simpler substances

He Constructed a glass tube with two metal plates inside it

1ton=??kg

1m=??cm

Greek Philosopher that said all matter around us is made up of invisible tiny particles called "atomos"

British schoolmaster and chemist who borrowed the concept of atomos to explain the laws of chemistry

can only be observed when a substance is changed into another substance

1m=??ft

1km=??mile

building blocks of matter

They studied the radioactivity and was first observed by Henri Becquerel

solid substances are separated from liquids and solutions.

he discovered the concept of atomic numbers

uses differences in the boiling points of substances to separate a homogeneous mixture into its components.

is considered the “hotness and coldness” of an object that determines the direction of heat flow

He Discovered electrons charge to mass ratio 1.76×10⁸ c/g

3 Properties of Electrical Charges

he discovered the 3 types of radiation alpha beta gamma

Number of protons in the nucleus of an atom

depend upon the amount of the substance present.

is the capacity to do work or transfer heat.

Father of Bohr Theory of atom

is the energy of motion

said that all matter was made of only 4 elements

English Chemist who proposed that the structure of atom is somehow related to "electricity"

refers to how closely individual measurements agree with the correct, or “true,” value.

1km=??m

American Physicist who invented oil dropped experiment

He discovered Neutrons

It is uniform in composition throughout. There is only one phase of matter observed in a homogeneous mixture.

is a substance which can be decomposed to simpler substances because it is made up of more than one element

All digits of a measured quantity, including the uncertain ones, are called

is a measure of the amount of material in an object. SI uses the kilogram as the base unit. The metric system uses the gram as the base unit.

Law of Constant Composition was discovered by who?

is the energy used to cause the temperature of an object to increase.

This technique separates substances on the basis of differences in the ability of substances to adhere to the solid surface, in this case, dyes to paper.

can be observed without changing a substance into another substance.

is a measure of how closely individual measurements agree with one another.

are changes in matter that do not change the composition of a substance

1in=??cm

of an object depends on its relative position compared to other objects

1lb = ??kg

is anything that has mass and takes up space

He also discovered the proton

This law was also discovered by John Dalton

is the spontaneous emission of high-energy radiation by an atom

result in new substances

is the total number of protons and neutrons in the nucleus of an atom

1m=??yd

are atoms of the same element with different masses

Composition of matter

Is the study of matter, its properties, and the changes it undergoes

it is a tube that has a piece of metal called an electrode, at each end

Joseph John Thomson or J.J. invented the_____, a characteristic dish of British cuisine.

1ft=??inches

also know as the "Law of Definite Proportion"

are independent of the amount of the substance that is present

has distinct properties and a composition that does not vary from sample to sample