- Google Sites
... 1. Models of the atom: hard indivisible sphere, solid sphere with positive and negative uniformly distributed; nuclear atom; orbital atom; wave mechanical model 2. Using cathode ray tubes, the existence of electrons in atoms were discovered. 3. In the gold foil experiment, alpha particles(positive) ...
... 1. Models of the atom: hard indivisible sphere, solid sphere with positive and negative uniformly distributed; nuclear atom; orbital atom; wave mechanical model 2. Using cathode ray tubes, the existence of electrons in atoms were discovered. 3. In the gold foil experiment, alpha particles(positive) ...
Matter
... – Collection of the combination same type of atom elements and/or – Cannot be compounds or decomposed both. • Compound • USUALLY – 2 or more different heterogeneous atoms chemically bonded together. ...
... – Collection of the combination same type of atom elements and/or – Cannot be compounds or decomposed both. • Compound • USUALLY – 2 or more different heterogeneous atoms chemically bonded together. ...
Basic Chemistry notes
... Atoms are ______________________________________shell is complete How to fill the atom’s shells Shell 1 can hold a maximum of________ electrons Shell 2 can hold a maximum of ________electrons Shell 3 can hold a maximum of ________electrons ...
... Atoms are ______________________________________shell is complete How to fill the atom’s shells Shell 1 can hold a maximum of________ electrons Shell 2 can hold a maximum of ________electrons Shell 3 can hold a maximum of ________electrons ...
The Atom Power point - Effingham County Schools
... definition of an element as a substance that cannot be further broken down by ordinary chemical means. •It was also clear that elements combine to form compounds that have different physical and chemical properties than those of the elements that form them. Na + Cl → NaCl ...
... definition of an element as a substance that cannot be further broken down by ordinary chemical means. •It was also clear that elements combine to form compounds that have different physical and chemical properties than those of the elements that form them. Na + Cl → NaCl ...
1) - Kurt Niedenzu
... 32) The increase in atomic radius of each successive element within a group is primarily due to an increase in the number of a) neutrons in the nucleus b) electrons in the outermost shell c) unpaired electrons d) occupied principal energy levels 33) Elements that have properties of both metals and n ...
... 32) The increase in atomic radius of each successive element within a group is primarily due to an increase in the number of a) neutrons in the nucleus b) electrons in the outermost shell c) unpaired electrons d) occupied principal energy levels 33) Elements that have properties of both metals and n ...
CHEMICAL FOUNDATIONS: ELEMENTS AND ATOMS
... compound always has the same relative numbers and types of atoms. 4 Chemical reactions involve reorganization of the atoms - changes in the way they are bound together. The atoms themselves are not changed in a chemical reaction. ...
... compound always has the same relative numbers and types of atoms. 4 Chemical reactions involve reorganization of the atoms - changes in the way they are bound together. The atoms themselves are not changed in a chemical reaction. ...
File
... Dalton’s Atomic Theory: 1. Elements are made of tiny particles called atoms. 2. All atoms of a given element are identical. 3. The atoms of a given element are different from those of any other element. 4. Atoms of one element can combine with atoms of other elements to form compounds. A given comp ...
... Dalton’s Atomic Theory: 1. Elements are made of tiny particles called atoms. 2. All atoms of a given element are identical. 3. The atoms of a given element are different from those of any other element. 4. Atoms of one element can combine with atoms of other elements to form compounds. A given comp ...
Nature of Matter
... that consists entirely of one type of atom. -Over 100 elements are known, but only about 24 are found in living organisms. -Elements are represented by symbols, Ex : C = Carbon, H = Hydrogen, etc. -An element’s atomic number = # protons in an atom of the element. ...
... that consists entirely of one type of atom. -Over 100 elements are known, but only about 24 are found in living organisms. -Elements are represented by symbols, Ex : C = Carbon, H = Hydrogen, etc. -An element’s atomic number = # protons in an atom of the element. ...
ALL MATTER IS MADE UP OF TINY PARTICLES CALLED “ATOMOS”
... • - Aristotle: Matter had no properties itself, but that various combinations of simple properties made every substance known. • 4 properties were: moist, cold, dry, hot • 4 elements: – Water, earth, fire, air ...
... • - Aristotle: Matter had no properties itself, but that various combinations of simple properties made every substance known. • 4 properties were: moist, cold, dry, hot • 4 elements: – Water, earth, fire, air ...
Matter and Chemical Change PPT
... reaction. e.g. banana left on a table will ripen faster than one put in the fridge. Concentration: the greater the concentration of the substances the faster the reaction. e.g. strong vinegar will produce a faster reaction with baking soda than ...
... reaction. e.g. banana left on a table will ripen faster than one put in the fridge. Concentration: the greater the concentration of the substances the faster the reaction. e.g. strong vinegar will produce a faster reaction with baking soda than ...
Chapter 3 Chemical Foundations
... Note: mass number= Therefore …. Number of neutrons = Note: For any given element on the periodic table: Number of protons = In order to symbolically represent elements and isotopes chemists use the following notation: Mass Number ...
... Note: mass number= Therefore …. Number of neutrons = Note: For any given element on the periodic table: Number of protons = In order to symbolically represent elements and isotopes chemists use the following notation: Mass Number ...
UNIT 1 EXAM REVIEW Scientific Method What are the steps in the
... same column have in common? Groups, they have the same number of valence electrons and similar properties 21. Label the following: Transition metals, metals, non-metals, alkali earth metals, halogens, alkali metals, noble gases, hydrogen, and oxidation numbers ...
... same column have in common? Groups, they have the same number of valence electrons and similar properties 21. Label the following: Transition metals, metals, non-metals, alkali earth metals, halogens, alkali metals, noble gases, hydrogen, and oxidation numbers ...
atoms
... Try it Yourself! In the following pictures, there is a target hidden by a cloud. To figure out the shape of the target, we shot some beams into the cloud and recorded where the beams came out. Can you figure out the shape of the target? ...
... Try it Yourself! In the following pictures, there is a target hidden by a cloud. To figure out the shape of the target, we shot some beams into the cloud and recorded where the beams came out. Can you figure out the shape of the target? ...
Atoms - ChemistryatBiotech
... Why are elements placed in a group (column)? Why are elements placed in a period (row?) ...
... Why are elements placed in a group (column)? Why are elements placed in a period (row?) ...
Q1: Isotopes of an element contain: A. the same atomic number and
... b. As you move from left to right across a period the atomic radii of elements will decrease, if you move down a group the atomic radii will increase c. Justify your choices for the above statements a. Ionisation energy is the energy required to remove an electron. As you move down a group, the elec ...
... b. As you move from left to right across a period the atomic radii of elements will decrease, if you move down a group the atomic radii will increase c. Justify your choices for the above statements a. Ionisation energy is the energy required to remove an electron. As you move down a group, the elec ...
Review for Midyear - 1 KEY - Ms. Robbins` PNHS Science Classes
... Determine the number of protons, neutrons and electrons in Hydrogen-1, hydrogen-2, and hydrogen-3 All have 1 p+ and 1 e- Hydrogen-1 has no neutrons, Hydrogen-2 has 1 neutron, and Hydrogen-3 has 2 neutrons The last digit of an element’s group number is equal to its number of valence electrons. Which ...
... Determine the number of protons, neutrons and electrons in Hydrogen-1, hydrogen-2, and hydrogen-3 All have 1 p+ and 1 e- Hydrogen-1 has no neutrons, Hydrogen-2 has 1 neutron, and Hydrogen-3 has 2 neutrons The last digit of an element’s group number is equal to its number of valence electrons. Which ...
Regents Chemistry
... and void : The Greeks! Said matter was made up of particles from four elemental substances : Earth, water, air and fire Dalton’s Postulates (proposed 1808) 1. All elements are composed of indivisible atoms ...
... and void : The Greeks! Said matter was made up of particles from four elemental substances : Earth, water, air and fire Dalton’s Postulates (proposed 1808) 1. All elements are composed of indivisible atoms ...
Nature of Matter
... • Anything that takes up space • Has mass • You are made up of matter…and so is everything around you ...
... • Anything that takes up space • Has mass • You are made up of matter…and so is everything around you ...
Atomic History - Wylie High School Advanced Chemistry
... Do atoms have parts? J.J. Thomson suggested that they do. He advanced the idea that cathode rays are really streams of very small pieces of atoms. Three experiments led him to this. Thomson built a cathode ray tube ending in a pair of metal cylinders with a slit in them. These cylinders were in turn ...
... Do atoms have parts? J.J. Thomson suggested that they do. He advanced the idea that cathode rays are really streams of very small pieces of atoms. Three experiments led him to this. Thomson built a cathode ray tube ending in a pair of metal cylinders with a slit in them. These cylinders were in turn ...
Study Guide 1st Semester
... 32. Where are the alkali metal elements found? How do their electron configurations end? What are some typical behaviors of alkali metals? 33. Where are the alkaline earth metals found? How do their electron configurations end? What are some typical behaviors of alkaline earth metals? 34. What is a ...
... 32. Where are the alkali metal elements found? How do their electron configurations end? What are some typical behaviors of alkali metals? 33. Where are the alkaline earth metals found? How do their electron configurations end? What are some typical behaviors of alkaline earth metals? 34. What is a ...
File - Rogers` Rocket Science
... 2) _________of the same element are ______________. Atoms of any one element are different from those of any other element. 3) Atoms of different elements __________in simple ________-number ratios to form _____________ compounds. 4) In chemical reactions, atoms are_________________, _______________ ...
... 2) _________of the same element are ______________. Atoms of any one element are different from those of any other element. 3) Atoms of different elements __________in simple ________-number ratios to form _____________ compounds. 4) In chemical reactions, atoms are_________________, _______________ ...