Micro/Chem exam Word Scramble
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Question | Answer |
A unit containing two or more elements held together | Compound |
The symbol for carbon | C |
Which is the largest element | Sodium |
smallest particle of a chemical compound which still retains the properties of the compound | Molecule |
Particle with -1 charge | Electron |
Greater than 99% of the atoms of an element are: | Identical |
An atom can lose or gain electron(s) and become known as | An ion |
What is the formula (molecular) weight of the compound represented by the formula H2O? | 18 grams |
What is the basic unit for time in the metric system? | Second |
How many significan figures are there in the number 456.0007 ? | 7 |
Most known elements are found in | Nature |
The tall eight columns of the Periodic Table are known as the: | Representative elements |
The most energized electrons of an atom are located: | In the outermost energy shell |
The number of protons of an atom is equal to the number of: | Electrons |
The atomic weight (atomic mass) of an atom is equal to the __________of that atom: | Number of protons plus the number of neutrons |
The decaying of organic matter is an example of what type of property? | Chemical |
A chemical reaction between a metal, such as zinc, and HCl is an example of what type of property? | Chemical |
A measurement in the lab which is very close to the true value in a chemistry handbood is said to be: | Accurate |
The short columns located in the middle of the Periodic Table are referred to as: | Transition elements |
Elements that do not react belong to which group on the Periodic Table? | VIII |
Elements which belong to Group VIII of the Periodic Table have a __________in their atoms and do not react: | filled outer energy shell |
Most atoms of an element have the same number of _______in their nuclei: | neutrons |
In which Group of the periodic Table will the elements become ions by either gaining OR losing an electron? | Group IV A |
The properties of an element depend on the electrons where in relation to its atoms? | Farthest from the nucleus |
What kind of property is represented by the boiling point of water? | Physical |
Balance the equation Mg + O2 | 2MgO |
Balance the equation KClO3 = | 2KCl + O2 |
balance the equation 2KCl + O2 = | KClO3 |
In the balanced equation, what is the total of all coefficients? KI + Pb(NO3)2 = KNO3 + PbI2 | 6 |
A chemical bond which is formed as a result of a sharing of an electron(s) between atoms is what type of bond? | Covalent |
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