Intro to Atoms - Freehold Borough Schools
... • number of protons in an element • Number of electrons the element has Atomic mass: mass of one atom of the element How to calculate neutrons: atomic mass # - atomic number Valence electrons: electrons that can be transferred from one atom to another or may be shared between atoms Chemical symbol: ...
... • number of protons in an element • Number of electrons the element has Atomic mass: mass of one atom of the element How to calculate neutrons: atomic mass # - atomic number Valence electrons: electrons that can be transferred from one atom to another or may be shared between atoms Chemical symbol: ...
Notes for powerpoint and worksheets PDF
... 2. Numbers called ______________________ that indicate ____________________________________________: AlCl3 = 1 Al and 3 Cl This should makes sense because Al has a +3 charge and Cl has a ‐1 charge 3. The subscript is ONLY associated with the element symbol to the immediate left. TRY THESE: ...
... 2. Numbers called ______________________ that indicate ____________________________________________: AlCl3 = 1 Al and 3 Cl This should makes sense because Al has a +3 charge and Cl has a ‐1 charge 3. The subscript is ONLY associated with the element symbol to the immediate left. TRY THESE: ...
Notes 2 Balancing
... • Try the odd-even technique (double the odd number) if you see an even number of a particular atom on one side of an equation and an odd number of that atom on the other side. ...
... • Try the odd-even technique (double the odd number) if you see an even number of a particular atom on one side of an equation and an odd number of that atom on the other side. ...
Covalent Bonds - WordPress.com
... Atoms with incomplete valence shells can share or transfer valence electrons with certain other atoms Chemical bonds is attraction between two atoms resulting from a sharing of outer shell electron or the presence of opposite charge on the atoms There are three basic chemical bonds: ...
... Atoms with incomplete valence shells can share or transfer valence electrons with certain other atoms Chemical bonds is attraction between two atoms resulting from a sharing of outer shell electron or the presence of opposite charge on the atoms There are three basic chemical bonds: ...
The Chemical Basis of Life
... Isotopes of an element – Different forms of an element with the same atomic number but with different mass numbers – The atoms of some isotopes are stable – Other isotopes are radioactive, having unstable atoms that spontaneously break apart (decay) to form other atoms – When radioactive atoms decay ...
... Isotopes of an element – Different forms of an element with the same atomic number but with different mass numbers – The atoms of some isotopes are stable – Other isotopes are radioactive, having unstable atoms that spontaneously break apart (decay) to form other atoms – When radioactive atoms decay ...
H2, N2, O2, F2, Cl2, Br2, I2
... 3. • Only change the coefficient ( the number in front of the formula ) when balancing. This tells us how many of each molecule or atom we have in the balanced equation. If there is no number in front, a " 1 " is there but we usually leave out the 1's. • Do not change subscripts to balance. They are ...
... 3. • Only change the coefficient ( the number in front of the formula ) when balancing. This tells us how many of each molecule or atom we have in the balanced equation. If there is no number in front, a " 1 " is there but we usually leave out the 1's. • Do not change subscripts to balance. They are ...
CHEMICAL EQUATIONS, SYMBOLS, FORULAS 7
... Compounds are composed of more than one element and their formulas have more than one type of symbol showing the different elements that compose the compound. ...
... Compounds are composed of more than one element and their formulas have more than one type of symbol showing the different elements that compose the compound. ...
Midterm Review
... • Which set of elements contains a metalloid? 1. K, Mn, As, Ar 2. Li, Mg, Ca, Kr 3. Ba, Ag, Sn, Xe 4. Fr, F, O, Rn ...
... • Which set of elements contains a metalloid? 1. K, Mn, As, Ar 2. Li, Mg, Ca, Kr 3. Ba, Ag, Sn, Xe 4. Fr, F, O, Rn ...
Review for Physical Science Test #2
... To tell a strong acid from a weak acid To tell an acid from a neutral solution To tell a strong base from a weak base To create a temporary tattoo on your little sister’s face right before picture day. ...
... To tell a strong acid from a weak acid To tell an acid from a neutral solution To tell a strong base from a weak base To create a temporary tattoo on your little sister’s face right before picture day. ...
LIST OF TOPICS COVERED DURING THIS COURSE
... The following should serve as a checklist for your notebook. The topics below include all topics that have been covered this semester and are testable on your final exam. These topics should be studied from a variety of source including inclass notes, homework questions, lab questions, assignments, ...
... The following should serve as a checklist for your notebook. The topics below include all topics that have been covered this semester and are testable on your final exam. These topics should be studied from a variety of source including inclass notes, homework questions, lab questions, assignments, ...
The Atom - Effingham County Schools
... Modern Atomic Theory Not all aspects of Dalton’s atomic theory have proven to be correct. We now know that: • Atoms are divisible into even smaller particles • A given element can have atoms with different masses Some important concepts remain unchanged • All matter is composed of atoms • Atom ...
... Modern Atomic Theory Not all aspects of Dalton’s atomic theory have proven to be correct. We now know that: • Atoms are divisible into even smaller particles • A given element can have atoms with different masses Some important concepts remain unchanged • All matter is composed of atoms • Atom ...
Chemical and Molecular Formulas PPT
... compounds, they DO NOT represent a molecule • there are no separate molecular units, only a continuous array of ions • a formula unit is the lowest whole- number ratio of ions in a compound ...
... compounds, they DO NOT represent a molecule • there are no separate molecular units, only a continuous array of ions • a formula unit is the lowest whole- number ratio of ions in a compound ...
CHEMICAL REACTIONS Chapter 4
... 4. Check your answer to see if: – The numbers of atoms on both sides of the equation are now balanced. – The coefficients are in the lowest possible whole number ratios. (No fractions) ...
... 4. Check your answer to see if: – The numbers of atoms on both sides of the equation are now balanced. – The coefficients are in the lowest possible whole number ratios. (No fractions) ...
Exam on Matter through Bonding
... atom, the orbitals are regions of the most probable location of (1) protons (3) electrons (2) neutrons (4) positrons 5. Which type of bond is formed when electrons are transferred from one atom to another? (1) covalent (3) hydrogen (2) ionic (4) metallic 6. Which substance can not be decomposed by a ...
... atom, the orbitals are regions of the most probable location of (1) protons (3) electrons (2) neutrons (4) positrons 5. Which type of bond is formed when electrons are transferred from one atom to another? (1) covalent (3) hydrogen (2) ionic (4) metallic 6. Which substance can not be decomposed by a ...
Ch. 10 – Stoichiometry Stoichiometry – relates molar ratios between
... mass – the initial and final mass must be the same ...
... mass – the initial and final mass must be the same ...
I CAN write Chemical formulas
... 1. Write the oxidation number above each (putting parantheses around the polyatomic ion). 2. Cross these and write the oxidation number (without plus or minus charge) of each ion as the subscript of the other atom/polyatomic ion. ...
... 1. Write the oxidation number above each (putting parantheses around the polyatomic ion). 2. Cross these and write the oxidation number (without plus or minus charge) of each ion as the subscript of the other atom/polyatomic ion. ...
to Ch 3.1_Atoms_The Building Blocks of Matter
... 3.1 The Atom: From Philosophical Idea to Scientific Theory Dalton’s Atomic Theory • All matter is composed of extremely small particles called atoms. • Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties. ...
... 3.1 The Atom: From Philosophical Idea to Scientific Theory Dalton’s Atomic Theory • All matter is composed of extremely small particles called atoms. • Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties. ...
Gmelin Tips and Reminders
... • LIGFO: Ligand Formula: This lets you search for certain ligands without having to draw the substructures. If a combination of these are used, order them alphabetically: Ligand Code Atom L C A B, Si, Ge D N, P, As, Sb Q O, S, Se, Te X H, F, Cl, Br, I, At CO, CS, CN, CNS, CNO, CNR “Special” ligands, ...
... • LIGFO: Ligand Formula: This lets you search for certain ligands without having to draw the substructures. If a combination of these are used, order them alphabetically: Ligand Code Atom L C A B, Si, Ge D N, P, As, Sb Q O, S, Se, Te X H, F, Cl, Br, I, At CO, CS, CN, CNS, CNO, CNR “Special” ligands, ...
Prerequisite Knowledge for Chemistry
... Ions are atoms with an unequal number of protons and electrons. When there are more protons than electrons the atom is positive and we call the atom a “cation”. When there are more electrons than protons the atom is negative and we call the atom an “anion”. A neutral atom of sodium would have 11 pro ...
... Ions are atoms with an unequal number of protons and electrons. When there are more protons than electrons the atom is positive and we call the atom a “cation”. When there are more electrons than protons the atom is negative and we call the atom an “anion”. A neutral atom of sodium would have 11 pro ...
Lecture 5 (2.1-2.3)
... – Retain the properties of their components – Can be separated into their components by physical means ...
... – Retain the properties of their components – Can be separated into their components by physical means ...
HERE
... A) mixtures can be physically separated. B) mixtures are made of one type of atom. C) pure substances have no chemical bonds. D) pure substances can be physically separated. 3) When two or more substances combine, but each keeps its own properties, the new combination is called a(an) A) Element B) M ...
... A) mixtures can be physically separated. B) mixtures are made of one type of atom. C) pure substances have no chemical bonds. D) pure substances can be physically separated. 3) When two or more substances combine, but each keeps its own properties, the new combination is called a(an) A) Element B) M ...