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Chemistry

Delve into the study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. Chemistry is the central science connecting other scientific disciplines.

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Questions
Q: Sodium has 11 protons and 12 neutrons. What is its isotope notation
2 answers
Q: In the reaction Mg(s) plus 2H2O(l) Mg(OH)2(s) plus H2(g) what is the oxidation state of Mg in Mg(s)
3 answers
Q: Electrons like barius located toward the bottom of a group have a lower attraction for their valence electrons because they have a what
1 answer
Q: The heavier elements in the universe were formed by .
2 answers
Q: Which way does water move once it passes through the aeration
1 answer
Q: A chemical is spilled in a grassy area. The chemical has been known to kill all bacteria that live in the soil. How will this most likely affect the area
6 answers
Q: When A warm soda bottle fizzes when opened is it a physical change or a chemical change
3 answers
Q: Chlorine is used to kill bacteria in the water at water treatment plants. This chlorine can be harmful to some ocean species. Based on this information what other step must be taken in the treatment o
1 answer
Q: The cadmium in the control rods slows down a nuclear fission reaction by absorbing neutrons.
1 answer
Q: An acid is a(n) .
2 answers
Q: Metal which reacts with acids. it sounds as though you might wash your dishes in it
1 answer
Q: Subscripts can be changed in order to balance a chemical equation.
4 answers
Q: While heating a solution in a beaker what is the appropriate safety equipment to have on the bench
2 answers
Q: Which theory describes the way are arranged within a molecule
2 answers
Q: Polyethylene molecules are made of monomers linked head to tail
2 answers
Q: A reaction occurs when an acid and base combine.
1 answer
Q: A saturated hydrocarbon is an organic compound which contains hydrogen and carbon joined
8 answers
Q: A substance that is dissolved in liquid is called What
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Q: What is a quenching gas
3 answers
Q: What elements have the lowest boiling and melting points
1 answer
Q: Is hydrogen atom stable and why
1 answer
Q: How can an stm help improve daltons theory
2 answers
Q: Power plants release sulfur dioxide and nitrogen oxides into the atmosphere where they combine with water vapor to form precipitation
1 answer
Q: Give an example from the table above of two ions that can form an ionic bond
1 answer
Q: What is the net ionic equation for pb(no3)2 and ki
1 answer
Q: What is the net ionic equation for pb(no3)2 and naoh
1 answer
Q: What is the net ionic equation for pb(no3)2 and na2co3
1 answer
Q: Compare and Contrast and How are a substance and a solution similar How are they different
1 answer
Q: Who can you determine that a coin is not pure silver if you know the mass and volume of the coin
1 answer
Q: How is hydrochloric acid important to maintain the heath of the human body
1 answer
Q: How does potassium become a potassium ion with a plus 1 charge
1 answer
Q: Is soduim bad for you
2 answers
Q: Because it is the most poisonous substance known plutonium can no longer be usedas a source of
1 answer
Q: Which one if the following is an example of a composition reaction
2 answers
Q: H2S intermolecular force
2 answers
Q: What is the second most common element after oxygen
2 answers
Q: What happens when hydrogen peroxide reacts with yeast
1 answer
Q: Geometric isomers are molecules that .
2 answers
Q: What belongs in the blank space of the following chemical equation for the burning of fossil fuels fossil fuel plus carbon dioxide plus water plus heat
1 answer
Q: What is a rock that yields oil when heated
2 answers
Q: How many moles of fluoride ions are present in 10.4 g of NaF
2 answers
Q: When two different types of atoms share electrons to complete an octet what type of bond is formed
2 answers
Q: What is the complete ionic equation for NaOH(aq) plus HCI(aq) - H2O(I) plus NaCI(aq)
1 answer
Q: Where are all the products of a hydrocarbon combustion reaction
2 answers
Q: What is needed to balance the reaction Cl2 plus Kl KCl plus l2
1 answer
Q: How is a colour wheel made of
1 answer
Q: If a reaction starts with a 6 atoms of a solid and 12 atoms of a gas what is known about the product
2 answers
Q: Minerals are classified according to their .
2 answers
Q: What is the reaction SO2 plus H2O H2SO2 not balanced
1 answer
Q: Bromine belongs to the group of the periodic table.
2 answers
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