(2) for each
... element can be gathered from its position in the period table. For example, you can predict with reasonably good accuracy the physical and chemical properties of the element. You can also predict what other elements a particular element will react with chemically. Understanding the organization and ...
... element can be gathered from its position in the period table. For example, you can predict with reasonably good accuracy the physical and chemical properties of the element. You can also predict what other elements a particular element will react with chemically. Understanding the organization and ...
Episode 7 - The Periodic Table
... 10. How does the size of an atom change a. as you go down a group of elements? It increases b. as you go from left to right in a period of elements? It decreases 11. Who developed the periodic table? Mendeleev 12. What did Mendeleev do for elements that had not yet been discovered? He left spaces f ...
... 10. How does the size of an atom change a. as you go down a group of elements? It increases b. as you go from left to right in a period of elements? It decreases 11. Who developed the periodic table? Mendeleev 12. What did Mendeleev do for elements that had not yet been discovered? He left spaces f ...
2 Types of Chemical Bonds
... 1. Ionic Bond – gain or lose valence electrons • This is a chemical bond formed by the attraction between positive (+) and negative (-) ions. What types of elements form Ionic Bonds? Metal elements: • Lose valence electrons to form (+) ions • Easier to lose than gain to get 8 Non Metal elements: • G ...
... 1. Ionic Bond – gain or lose valence electrons • This is a chemical bond formed by the attraction between positive (+) and negative (-) ions. What types of elements form Ionic Bonds? Metal elements: • Lose valence electrons to form (+) ions • Easier to lose than gain to get 8 Non Metal elements: • G ...
The Periodic Table - Teach-n-Learn-Chem
... 10. How does the size of an atom change a. as you go down a group of elements? It increases b. as you go from left to right in a period of elements? It decreases 11. Who developed the periodic table? Mendeleev 12. What did Mendeleev do for elements that had not yet been discovered? He left spaces f ...
... 10. How does the size of an atom change a. as you go down a group of elements? It increases b. as you go from left to right in a period of elements? It decreases 11. Who developed the periodic table? Mendeleev 12. What did Mendeleev do for elements that had not yet been discovered? He left spaces f ...
STUDY GUIDE – CHAPTER 1 ATOMS AND ELEMENTS 1
... What are, respectively, the group and the period number to which this element belongs? Answer: _____________________ 8) The lab technician in your school’s Chemistry lab needs a sample of potassium (K) for an upcoming experiment; however, she does not have enough of the metal. Instead of cancelling ...
... What are, respectively, the group and the period number to which this element belongs? Answer: _____________________ 8) The lab technician in your school’s Chemistry lab needs a sample of potassium (K) for an upcoming experiment; however, she does not have enough of the metal. Instead of cancelling ...
The Periodic Table
... Electrons in the same quantum level do not shield as effectively as electrons in inner levels Irregularities at half filled and filled sublevels due to extra repulsion of electrons paired in orbitals, making them easier to remove Tends to decrease down a group Outer electrons are farther from the nu ...
... Electrons in the same quantum level do not shield as effectively as electrons in inner levels Irregularities at half filled and filled sublevels due to extra repulsion of electrons paired in orbitals, making them easier to remove Tends to decrease down a group Outer electrons are farther from the nu ...
Class Notes
... Dalton’s Atomic Theory (1808) 1. Elements are composed of extremely small particles called atoms. 2. All atoms of a given element are identical, having the same size, mass and chemical properties. The atoms of one element are different from the atoms of all other elements. 3. Compounds are composed ...
... Dalton’s Atomic Theory (1808) 1. Elements are composed of extremely small particles called atoms. 2. All atoms of a given element are identical, having the same size, mass and chemical properties. The atoms of one element are different from the atoms of all other elements. 3. Compounds are composed ...
Properties of Elements
... actinide series. One element of the lanthanide series and most of the elements in the actinide series are called trans-uranium, which means synthetic or man-made. ...
... actinide series. One element of the lanthanide series and most of the elements in the actinide series are called trans-uranium, which means synthetic or man-made. ...
Element Group Reaction with Oxygen Reaction with Water Lithium
... 9. Mendeleev predicted that ekaaluminium, Ea, and ekasilicon, Es, (the temporary names he gave to the undiscovered elements between zinc and arsenic) would react with oxygen to produce Ea2O3 and EsO2 respectively. On what did he base these predictions? ...
... 9. Mendeleev predicted that ekaaluminium, Ea, and ekasilicon, Es, (the temporary names he gave to the undiscovered elements between zinc and arsenic) would react with oxygen to produce Ea2O3 and EsO2 respectively. On what did he base these predictions? ...
ppt
... the movement of electrons? •Each shelf represents an energy level •Each book represents an electron •You can move a book to a higher or lower shelf with the correct amount of energy. •A book cannot be between shelves (An electron can move by gaining or losing energy but can never be between energy l ...
... the movement of electrons? •Each shelf represents an energy level •Each book represents an electron •You can move a book to a higher or lower shelf with the correct amount of energy. •A book cannot be between shelves (An electron can move by gaining or losing energy but can never be between energy l ...
Exam Essays
... energy than the 3d sublevels. According to the Aufbau principle, an electron occupies the lowest energy level that can receive it. Some elements move an electron from a filled 4s sublevel to an unoccupied 3d sublevel so they can have more unpaired electrons in their configuration. This minimizes ele ...
... energy than the 3d sublevels. According to the Aufbau principle, an electron occupies the lowest energy level that can receive it. Some elements move an electron from a filled 4s sublevel to an unoccupied 3d sublevel so they can have more unpaired electrons in their configuration. This minimizes ele ...
Chapter 7
... the second electron from a gaseous 1+ ion Atom+ + energy Atom2+ + eMg+ + 1451 kJ/mol Mg2+ + e- Atoms can have 3rd (IE3), 4th (IE4), etc. - Each IE is significantly higher than the ...
... the second electron from a gaseous 1+ ion Atom+ + energy Atom2+ + eMg+ + 1451 kJ/mol Mg2+ + e- Atoms can have 3rd (IE3), 4th (IE4), etc. - Each IE is significantly higher than the ...
PERIODIC PROPERTY: SIZE OF THE ATOM/ ATOMIC RADIUS
... As you move towards right in a row, you will find that the orbit number remains the same but the number of electrons and the number of protons increase. Nucleus becomes more powerful with the increasing number of protons and therefore it becomes capable of binding electrons more closely . That is wh ...
... As you move towards right in a row, you will find that the orbit number remains the same but the number of electrons and the number of protons increase. Nucleus becomes more powerful with the increasing number of protons and therefore it becomes capable of binding electrons more closely . That is wh ...
The Particle Theory of Matter
... •Naming cations: Use the element name followed by __________________ Some Cations have more than one charged form. •Negatively charged ions: __________________ •Atoms that ___________ electrons to form compounds are called _____________. Anions have a __________________ charge. •Naming Anions: Drop ...
... •Naming cations: Use the element name followed by __________________ Some Cations have more than one charged form. •Negatively charged ions: __________________ •Atoms that ___________ electrons to form compounds are called _____________. Anions have a __________________ charge. •Naming Anions: Drop ...
Atomic Structure and Types of Atoms
... is the sum of the protons and neutrons in the nucleus of an atom. The most common isotope of carbon has a mass number of 12 (6 protons + 6 neutrons) and may be written as “carbon-12.” Two other isotopes are carbon-13 and carbon-14. As shown in Figure 3, a symbol with the mass number above and the at ...
... is the sum of the protons and neutrons in the nucleus of an atom. The most common isotope of carbon has a mass number of 12 (6 protons + 6 neutrons) and may be written as “carbon-12.” Two other isotopes are carbon-13 and carbon-14. As shown in Figure 3, a symbol with the mass number above and the at ...
Anticipation Guide Unit 4: Matter, the Atomic Structure, and the
... stardust. Matter is composed of atoms that originated either when the Universe began or in stars, often as the dust that exploded out of stars as they ended their life in a super nova. What are those atoms? Many of the early Greeks believed everything to be made up of air, water, earth and fire or a ...
... stardust. Matter is composed of atoms that originated either when the Universe began or in stars, often as the dust that exploded out of stars as they ended their life in a super nova. What are those atoms? Many of the early Greeks believed everything to be made up of air, water, earth and fire or a ...
Element Symbol
... mixed and cannot be visibly distinguished. The particles of the substances are so small that they cannot be easily seen. 11. Another name for a homogeneous mixture is a solution. ...
... mixed and cannot be visibly distinguished. The particles of the substances are so small that they cannot be easily seen. 11. Another name for a homogeneous mixture is a solution. ...
periodic table: quantum numbers
... Periodic Law: When the elements are arranged in order of increasing atomic number, the properties of elements are “periodic” - they repeat from left to right across each period. Group: Vertical column on the periodic table. Period: Horizontal row on the periodic table. Noble Gases: Rightmost group o ...
... Periodic Law: When the elements are arranged in order of increasing atomic number, the properties of elements are “periodic” - they repeat from left to right across each period. Group: Vertical column on the periodic table. Period: Horizontal row on the periodic table. Noble Gases: Rightmost group o ...
lecture slides of chap8
... A metal ion with a net +3 charge has five electrons in the 3d subshell. What is this metal? (a) Cr (b) Mn (c) Fe (d) Co (e) Ni This species has +3 charges, which indicates that it has three more protons than the electrons. According to the question that it has five electrons in the 3d subshell, and ...
... A metal ion with a net +3 charge has five electrons in the 3d subshell. What is this metal? (a) Cr (b) Mn (c) Fe (d) Co (e) Ni This species has +3 charges, which indicates that it has three more protons than the electrons. According to the question that it has five electrons in the 3d subshell, and ...
Matter-Atoms PPT
... The term matter describes all of the physical substances around us: your table, your body, a pencil, water, and so forth ...
... The term matter describes all of the physical substances around us: your table, your body, a pencil, water, and so forth ...
atomic theory of matter
... confirmed this leading to this law. • Law of multiple proportions: when two elements form more than one compound, the ratio of the masses in one compound divided by the ratio of these masses in the other compound gives a ratio of small whole numbers. E.g. There are three binary compounds that form b ...
... confirmed this leading to this law. • Law of multiple proportions: when two elements form more than one compound, the ratio of the masses in one compound divided by the ratio of these masses in the other compound gives a ratio of small whole numbers. E.g. There are three binary compounds that form b ...
Nuclear Reactions
... 2. The nucleus is essentially the entire mass of the atom 3. The nucleus is positively charged – the amount of positive charge of the nucleus balances the negative charge of the electrons ...
... 2. The nucleus is essentially the entire mass of the atom 3. The nucleus is positively charged – the amount of positive charge of the nucleus balances the negative charge of the electrons ...
Name
... 15. All atoms are neutral because the number of __________________ always equals the number of __________________ in every atom. Fill in the chart with a charge and mass: ...
... 15. All atoms are neutral because the number of __________________ always equals the number of __________________ in every atom. Fill in the chart with a charge and mass: ...