C1-14 Flashcards

  • Created by: meganmawx
  • Created on: 16-05-18 18:22
What is a Element?
Substance made from atoms
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What does the nucleus in a element contain?
The same number of protons
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What is a Compound?
2 or more different elements
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What is a word equation?
A chemical equation tells you which chemicals reacted together (the reactants) and the new chemicals that were made in the reaction (the products). The simplest equation is a word equation. For example: sodium + chlorine → sodium chloride
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What is in a chemical reaction?
Reactants are the substances that undergo a chemical change in a reaction
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What is a product?
A product are the new substances formed
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What is a balanced equation?
chemical equation needs to be balanced so that it follows the law of conservation of mass. A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side.
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What is a Ion?
A ion is a electrically charged particle.
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When does a ion form?
A ion is formed when an atom or group of atoms loses or gains electrons
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How do you write a ionic equation
To write the complete ionic equation: Start with a balanced molecular equation. Break all soluble strong electrolytes (compounds with (aq) beside them) into their ions. indicate the correct formula and charge of each ion. indicate the correct number
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What is a molecular equation?
A molecular equation is a balanced chemical equation where the ionic compounds are expressed as molecules
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How do you balance a ionic equation?
Write the balanced molecular equation, including the state of each substance. Use your knowledge of solubility rules, strong acids, and strong bases to rewrite the equation as the complete ionic equation showing which compounds are dissociated into i
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Hazards
A hazard is something that could cause,damage or harm to someone or something or adverse health effects,these may occur immediately or later on
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What is the purpose of a Hazard symbol?
The labels on containers of hazardous substances include hazard symbols;these are intended to warn about the dangers associated with the substance in the container.They also let people know about the precautions to take when using a substance
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What can you do as a precaution?
A precaution is something that you can do to reduce the risk of harm from a hazard.Precautions include: Using a less hazardous substance,using protective clothing such as; gloves and eye protection or using a different method of apparatus
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What is an atomic structure?
An atomic structure contains of a central nucleus,which contains protons and neutrons is surrounded by electrons in shells
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What is an isotope?
Isotopes are atoms of an element with;The same number of protons and different numbers of neutrons
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Number of particles
Each atom can be described by its mass numbers,the total number of protons and neutrons in the nucleus and the atomic number,the number of protons in the nucleus
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Number of particles (part 2)
Atoms of a given element have the same number of protons in the nucleus ,they have the same atomic number ,this number is unique to that element
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Ions
An ion is a atom or a group of atoms with a positive or negative charge
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What are covalent bonds?
A covalent bond is a formed when a pair of electrons is shared between two atoms
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Other cards in this set

Card 2

Front

What does the nucleus in a element contain?

Back

The same number of protons

Card 3

Front

What is a Compound?

Back

Preview of the front of card 3

Card 4

Front

What is a word equation?

Back

Preview of the front of card 4

Card 5

Front

What is in a chemical reaction?

Back

Preview of the front of card 5
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