File
... produce all the variety of substances we see today. - In ancient ____________________, the elements were thought to be ______________, __________________, ________________, __________________ and __________________. - Today we know there are over _________________ elements that make up all the matte ...
... produce all the variety of substances we see today. - In ancient ____________________, the elements were thought to be ______________, __________________, ________________, __________________ and __________________. - Today we know there are over _________________ elements that make up all the matte ...
Atoms - johunter
... Element: a substance that cannot be broken down into simpler substances; first discovered in the 19th century ...
... Element: a substance that cannot be broken down into simpler substances; first discovered in the 19th century ...
Text Questions
... 1. Among the Greeks, _____________ believed in the idea of indivisible particles, or atoms. _______ and ___________ advanced the idea that there were no ultimately indivisible particles. The atomic view of matter was ignored while ______________ philosophy dominated __________ __________. 2. What we ...
... 1. Among the Greeks, _____________ believed in the idea of indivisible particles, or atoms. _______ and ___________ advanced the idea that there were no ultimately indivisible particles. The atomic view of matter was ignored while ______________ philosophy dominated __________ __________. 2. What we ...
Discovery Education Science Connection
... Before the invention of microscopes, we had a limited view of the world. People could not conceptualize things that were too small to see, but they noticed that some things changed. Fire burned wood into ash. Water would boil away. Plants grew from earth. People breathed air. These observations led ...
... Before the invention of microscopes, we had a limited view of the world. People could not conceptualize things that were too small to see, but they noticed that some things changed. Fire burned wood into ash. Water would boil away. Plants grew from earth. People breathed air. These observations led ...
SB Vocab list Word document
... A negatively charged particle found in the shells of an atom. Its mass is approximately 1/2000 that of a proton or neutron. Group A vertical column in the Periodic Table. Elements in the same group have similar chemical properties since they all have the same number of electrons in their outer (or v ...
... A negatively charged particle found in the shells of an atom. Its mass is approximately 1/2000 that of a proton or neutron. Group A vertical column in the Periodic Table. Elements in the same group have similar chemical properties since they all have the same number of electrons in their outer (or v ...
Atomic Theory I Package
... The atoms in Democritus’ theory themselves remain unchanged, but move about in space to combine in various ways to form all macroscopic objects. Early atomic theory stated that the characteristics of an object are determined by the shape of its atoms. So, for example, sweet things are made of smooth ...
... The atoms in Democritus’ theory themselves remain unchanged, but move about in space to combine in various ways to form all macroscopic objects. Early atomic theory stated that the characteristics of an object are determined by the shape of its atoms. So, for example, sweet things are made of smooth ...
The Chemical Context of Life
... Energy is the capacity to cause change Potential energy is the energy that matter has because of its location or structure The electrons of an atom differ in their amounts of potential energy An electron’s state of potential energy is called its energy level, or electron shell Only the elect ...
... Energy is the capacity to cause change Potential energy is the energy that matter has because of its location or structure The electrons of an atom differ in their amounts of potential energy An electron’s state of potential energy is called its energy level, or electron shell Only the elect ...
Scientific method
... Intensive properties- properties independent of amount of matter are called intensive properties. These are used to identify matter are like finger prints. Density, specific heat, boiling point, melting point etc are examples of Intensive properties. ...
... Intensive properties- properties independent of amount of matter are called intensive properties. These are used to identify matter are like finger prints. Density, specific heat, boiling point, melting point etc are examples of Intensive properties. ...
HW 2 Key
... graph paper. You must label each set in the upper left hand corner with your name, the date and the chapter. Problems must be identified by number and all work must be shown with answers boxed. Be sure your handwriting is legible. An example is posted in the ‘course basics’ section of our Moodle pag ...
... graph paper. You must label each set in the upper left hand corner with your name, the date and the chapter. Problems must be identified by number and all work must be shown with answers boxed. Be sure your handwriting is legible. An example is posted in the ‘course basics’ section of our Moodle pag ...
File
... • Key to the chemical behavior of an atom lies in the number and arrangement of its electrons in their orbitals • Bohr model – electrons in discrete orbits • Modern physics defines orbital as area around a nucleus where an electron is most likely to be found ...
... • Key to the chemical behavior of an atom lies in the number and arrangement of its electrons in their orbitals • Bohr model – electrons in discrete orbits • Modern physics defines orbital as area around a nucleus where an electron is most likely to be found ...
Chapter 2
... • Key to the chemical behavior of an atom lies in the number and arrangement of its electrons in their orbitals • Bohr model – electrons in discrete orbits • Modern physics defines orbital as area around a nucleus where an electron is most likely to be found ...
... • Key to the chemical behavior of an atom lies in the number and arrangement of its electrons in their orbitals • Bohr model – electrons in discrete orbits • Modern physics defines orbital as area around a nucleus where an electron is most likely to be found ...
History_of_the_Atomic_Model
... Atomic Models: Dalton 1. Elements composed of atoms; atoms are indestructible 2. Atoms of the same element are exactly alike 3. Atoms of different elements are different 4. Compounds formed by joining 2 atoms ...
... Atomic Models: Dalton 1. Elements composed of atoms; atoms are indestructible 2. Atoms of the same element are exactly alike 3. Atoms of different elements are different 4. Compounds formed by joining 2 atoms ...
Lesson 5
... Democritus said that any object cut into smaller pieces would eventually become so small that it could not be cut any more (called this smallest piece atomos) ...
... Democritus said that any object cut into smaller pieces would eventually become so small that it could not be cut any more (called this smallest piece atomos) ...
Atomic Theory- 1. Matter is composed of tiny, indivisible particles
... Atomic Theory1. Matter is composed of tiny, indivisible particles called atoms. 2. An element is composed of one type of atom. Properties of atoms are identical to each other. 3. A compound contains two or more different elements. The relative number of atoms of each element in a compound is the sam ...
... Atomic Theory1. Matter is composed of tiny, indivisible particles called atoms. 2. An element is composed of one type of atom. Properties of atoms are identical to each other. 3. A compound contains two or more different elements. The relative number of atoms of each element in a compound is the sam ...
Atoms, Molecules, Compounds, Elements, and Mixtures
... • Are made up of atoms bonded together. • The structure of an individual atom determines: –Whether the atom can form bonds. –How many other atoms it can bond to. ...
... • Are made up of atoms bonded together. • The structure of an individual atom determines: –Whether the atom can form bonds. –How many other atoms it can bond to. ...
Elements02
... 2. Each element has its own kind of atom. Atoms of the same element have the same mass. Atoms of different elements have different masses. 3. Compounds are created when atoms of different elements link to form compound atoms. Water is a compound because the two element of hydrogen and oxygen combine ...
... 2. Each element has its own kind of atom. Atoms of the same element have the same mass. Atoms of different elements have different masses. 3. Compounds are created when atoms of different elements link to form compound atoms. Water is a compound because the two element of hydrogen and oxygen combine ...
Ch 8 AP Practice
... (a) Write the equation for the ionization of atomic fluorine that requires 1,681.0 kJ mol-1. (b) Account for the fact that the first ionization energy of atomic fluorine is greater than that of atomic oxygen. (You must discuss both atoms in your response.) (c) Predict whether the first ionization en ...
... (a) Write the equation for the ionization of atomic fluorine that requires 1,681.0 kJ mol-1. (b) Account for the fact that the first ionization energy of atomic fluorine is greater than that of atomic oxygen. (You must discuss both atoms in your response.) (c) Predict whether the first ionization en ...
Atoms Template
... want more definite ideas and tried to find the basic materials that all things were made of. ...
... want more definite ideas and tried to find the basic materials that all things were made of. ...
The Chemical Level of Organization
... • Molecule – when 2 or more atoms come together, share an electron ex. O2 – if atoms are not the same element = compound ex. NaCl, H2O ...
... • Molecule – when 2 or more atoms come together, share an electron ex. O2 – if atoms are not the same element = compound ex. NaCl, H2O ...
The Chemical Level of Organization
... • Molecule – when 2 or more atoms come together, share an electron ex. O2 – if atoms are not the same element = compound ex. NaCl, H2O ...
... • Molecule – when 2 or more atoms come together, share an electron ex. O2 – if atoms are not the same element = compound ex. NaCl, H2O ...
The Chemical Level of Organization
... • Molecule – when 2 or more atoms come together, share an electron ex. O2 – if atoms are not the same element = compound ex. NaCl, H2O ...
... • Molecule – when 2 or more atoms come together, share an electron ex. O2 – if atoms are not the same element = compound ex. NaCl, H2O ...
Section 12.1 - CPO Science
... 12.1 How atoms of various elements are different Isotopes are atoms of the same element that have different numbers of neutrons. The mass number of an isotope tells you the number of protons plus the number of neutrons. How are these carbon isotopes different? ...
... 12.1 How atoms of various elements are different Isotopes are atoms of the same element that have different numbers of neutrons. The mass number of an isotope tells you the number of protons plus the number of neutrons. How are these carbon isotopes different? ...
12.1 Structure of the Atom - appleg8
... 12.1 How atoms of various elements are different Isotopes are atoms of the same element that have different numbers of neutrons. The mass number of an isotope tells you the number of protons plus the number of neutrons. How are these carbon isotopes different? ...
... 12.1 How atoms of various elements are different Isotopes are atoms of the same element that have different numbers of neutrons. The mass number of an isotope tells you the number of protons plus the number of neutrons. How are these carbon isotopes different? ...
Atomic Theorists
... Thomson knew that opposite charges attract and like charges repel SO he proposed that a cathode ray is a stream of tiny negativelycharged particles moving at high speed ...
... Thomson knew that opposite charges attract and like charges repel SO he proposed that a cathode ray is a stream of tiny negativelycharged particles moving at high speed ...
History of molecular theory
In chemistry, the history of molecular theory traces the origins of the concept or idea of the existence of strong chemical bonds between two or more atoms.The modern concept of molecules can be traced back towards pre-scientific Greek philosophers such as Leucippus who argued that all the universe is composed of atoms and voids. Circa 450 BC Empedocles imagined fundamental elements (fire (20px), earth (20px), air (20px), and water (20px)) and ""forces"" of attraction and repulsion allowing the elements to interact. Prior to this, Heraclitus had claimed that fire or change was fundamental to our existence, created through the combination of opposite properties. In the Timaeus, Plato, following Pythagoras, considered mathematical entities such as number, point, line and triangle as the fundamental building blocks or elements of this ephemeral world, and considered the four elements of fire, air, water and earth as states of substances through which the true mathematical principles or elements would pass. A fifth element, the incorruptible quintessence aether, was considered to be the fundamental building block of the heavenly bodies. The viewpoint of Leucippus and Empedocles, along with the aether, was accepted by Aristotle and passed to medieval and renaissance Europe. A modern conceptualization of molecules began to develop in the 19th century along with experimental evidence for pure chemical elements and how individual atoms of different chemical substances such as hydrogen and oxygen can combine to form chemically stable molecules such as water molecules.