Chemical Equations
FeCl3 + MgO ---> Fe2O3 + MgCl2
2FeCl3 + MgO ---> Fe2O3 + 3MgCl2
If 25 grams of copper react with 70 grams of sodium carbonate, identify the limiting reagent.
Cu+Na2CO3→CuCO3+2NaCu+Na2CO3→CuCO3+2Na,
(Fill in the blank)
When the concentration increases, the rate of reaction increases because the ____ of collisions increases.
Rate
What is radioactivity?
Emission of high energy photons and particles
What is nuclear fission?
a nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy.
Li + H3PO4 ---> H2 + Li3PO4
3Li + H3PO4 ---> H2 + Li3PO4
Calculate the mass of ammonia produced when 36.0 g of nitrogen reacts with 11.3 g of hydrogen.
N2(g) + 3 H2(g) → 2 NH3(g)
(Fill in the blank)
When the temperature increases, the frequency of collisions increases and so does the ____ of the collisions.
Energy
What are some practical uses of radioactivity?
Gamma-rays can kill cancerous tumors Radiation therapy has saved millions of lives
What is nuclear fusion?
ZnS + O2 ---> ZnO + SO2
ZnS + (3/2)O2 ---> ZnO + SO2
If a student mixes 250 g of Na_2O with 300 g of H_2O, how many grams of NaOH are formed?
When solid ammonium chloride is shaken with water, a colourless solution forms and the temperature changes from 20°C to 16°C.
Give the name of the type of heat change occurring.
Endothermic
What is radioactive dating?
All living things contain trace elements of radioactive C-14 After they die the C-14 levels gradually diminish due to radioactive decay of the C-14 with a half-life of 5730 years
What is a fusion process?
Fusion is the process that powers the sun and the stars. It is the reaction in which two atoms of hydrogen combine together, or fuse, to form an atom of helium. In theprocess some of the mass of the hydrogen is converted into energy. ... The sun and stars do this by gravity.
FeS2 + Cl2 ---> FeCl3 + S2Cl2
FeS2 + (5/2)Cl2 ---> FeCl3 + S2Cl2
Write a complete balanced molecular equation for the reaction 2Na(NO_3) + Cu(OH)_2 to.
2NaNO3+Cu(OH)2→2NaOH+Cu(NO3)22NaNO3+Cu(OH)2→2NaOH+Cu(NO3)2
Define Bond energy
Bond energy is a measure of bond strength in a chemical bond. It is the amount of energy (in kJ·mol−1kJ·mol−1) that is needed to break the chemical bond between two atoms.
What is radioactive decay?
"Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay, beta decay, and gamma decay, all of which involve emitting one or more particles or photons."- wikipedia
What is an example of fusion?
Fusion is the opposite of Fission. Fusion is the process in which elements with smaller atomic mass like Hydrogen combine to form an element with a higher atomic mass like Helium. A good example of Fusion reaction happening in real life is the Sun.
Fe + HC2H3O2 ---> Fe(C2H3O2)3 + H2
Fe + 3HC2H3O2 ---> Fe(C2H3O2)3 + H2
Write a balanced equation for the reaction of Malonic acid with KOH.
The chemical formula of malonic acid is HOOC−CH2−COOH
Define an Exothermic Reaction
An exothermic reaction is one that releases energy in the form of heat or light.
What is radioactive decay PT 2
Stochastic
Why is fusion important to people?
Fusion is the process which powers the sun and the stars. It is energy that makes all life on earth possible. It is called 'fusion' because the energy is produced by fusing together light atoms, such as hydrogen, at the extremely high pressures and temperatures which exist at the centre of the sun (15 million ºC).