Questions and Answers
What are the three small particles that make up an atom?
Answer hidden
Complete the chart for the element nitrogen (N): Symbol, Element name, Atomic number, Atomic mass, # of protons, # of neutrons, # of electrons, Solid, liquid or gas?
Answer hidden
Draw a Lewis dot diagram for the following elements and ions: N, Ne, Be, Na+1, O2-, Al3+
Answer hidden
Complete the chart for the compounds KCl, H2SO4, Fe3(PO4)2: Types of Atoms, Number of Molecules, Number of Atoms
Answer hidden
Differentiate between an ionic compound and a molecular compound (covalent) in terms of the types of atoms involved and the nature of electrons (shared or transferred).
Answer hidden
Write the compound formula, type of compound (ionic/molecular), and compound name for the following substances: MgCl2, H2O, CF4, NaF, CO2, N2
Answer hidden
Name or give the formula for the following ionic compounds: a. BaCl2, b. Ca3S2, c. NaF, d. barium nitride
Answer hidden
What is the law of conservation of mass state?
Answer hidden
What are the reactants and products in the reaction between 5g of magnesium and 10g of hydrochloric acid?
Answer hidden
Write a balanced chemical equation for the reaction between 5g of magnesium and 10g of hydrochloric acid.
Answer hidden
What type of reaction is the reaction between 5g of magnesium and 10g of hydrochloric acid?
Answer hidden
How much magnesium chloride was produced in the reaction between 5g of magnesium and 10g of hydrochloric acid?
Answer hidden
What are the differences between acids and bases?
Answer hidden
If you had a solution with a pH of 8 and you wanted to ‘neutralize’ it, what would you add to the solution – an acid or a base?
Answer hidden
What is the difference between a strong and weak acid/base?
Answer hidden
Where is the ‘visible spectrum’ located in the electromagnetic spectrum?
Answer hidden
What do the letters LOST refer to when describing an image?
Answer hidden
Study Notes
Atomic Structure
- An atom is composed of three small particles: protons, neutrons, and electrons.
- The element nitrogen (N) has:
- Symbol: N
- Element name: Nitrogen
- Atomic number: 7
- Atomic mass: 14.01
-
of protons: 7
-
of neutrons: 7
-
of electrons: 7
- State: Gas
Lewis Dot Diagrams
- N: ·N·
- Ne: ·Ne·
- Be: ·Be·
- Na+: ·Na
- O2-: :O:
Compounds
- KCl:
- Types of Atoms: Potassium, Chlorine
- Number of Molecules: 1
- Number of Atoms: 2
- H2SO4:
- Types of Atoms: Hydrogen, Sulfur, Oxygen
- Number of Molecules: 1
- Number of Atoms: 7
- Fe3(PO4)2:
- Types of Atoms: Iron, Phosphorus, Oxygen
- Number of Molecules: 1
- Number of Atoms: 11
Ionic vs. Molecular Compounds
- Ionic compounds: formed by transferring electrons between atoms
- Molecular compounds: formed by sharing electrons between atoms
- Ionic compounds: composed of metal and nonmetal atoms
- Molecular compounds: composed of nonmetal atoms
Compound Formulas and Names
- MgCl2:
- Formula: MgCl2
- Type: Ionic
- Name: Magnesium Chloride
- H2O:
- Formula: H2O
- Type: Molecular
- Name: Water
- CF4:
- Formula: CF4
- Type: Molecular
- Name: Carbon Tetrafluoride
- NaF:
- Formula: NaF
- Type: Ionic
- Name: Sodium Fluoride
- CO2:
- Formula: CO2
- Type: Molecular
- Name: Carbon Dioxide
- N2:
- Formula: N2
- Type: Molecular
- Name: Nitrogen
Ionic Compounds
- BaCl2: Barium Chloride
- Ca3S2: Calcium Sulfide
- NaF: Sodium Fluoride
- Ba3N2: Barium Nitride
Law of Conservation of Mass
- The law states that matter cannot be created or destroyed in a chemical reaction.
Chemical Reaction
- Reactants: 5g of magnesium, 10g of hydrochloric acid
- Products: magnesium chloride, hydrogen gas
- Balanced chemical equation: 2Mg + 2HCl → 2MgCl + H2
- Type of reaction: Single displacement reaction
Reaction Products
- 10g of magnesium chloride was produced in the reaction.
Acids and Bases
- Acids: donate H+ ions
- Bases: accept H+ ions
- To neutralize a solution with a pH of 8, add an acid.
- Strong acids/bases: completely dissociate in water
- Weak acids/bases: partially dissociate in water
Electromagnetic Spectrum
- The visible spectrum is located between 400-700 nm in the electromagnetic spectrum.
Image Description
- LOST refers to: Location, Orientation, Size, and Texture when describing an image.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
