Flashcards
Chemistry Flashcards
Cards in this deck (17)
- 1Name 3 types of smaller particles in atomsProtons
Neutrons
Electrons - 2What is protons chargePositive
+1 - 3What is neutrons chargeNeutral
0 - 4What is an electron chargeNegative
-1 - 5What is the number of protons in an atom know asThe atomic number
- 6Is the atomic mass at the bottom or topTop
- 7What is a mass numberthe total number of protons and neutrons in a nucleus.
- 8what is a compoundCompounds are chemicals made from atoms of different elements joined by chemical bonds.
- 9How can you seperate a compoundBy a chemical reaction
- 10What does CO mean 2There is one carbon and 2 oxygens
- 11What does Na2SO4 mean2 Sodium's
1 Sulphate
4 Oxygen's
Sodium Sulphate - 12What does H 0 22 Hydrogen's
1 Oxygen
Water Molecule - 13What is a reactivity seriesThe most reactive metals to the least reactive metals
- 14What is an isotopeThey have the same atomic number, but different mass numbers
- 15How did Mendeleev sort out the periodic tableHe arranged elements in horizontal rows and vertical columns in order of increasing order of weights and left gaps
- 16Why did Mendeleev leave gapsHe left them to be discovered in the future
- 17—
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- elements,atoms,compounds,symbols,protons,neutrons,electrons,isotopes,periodic table,mendeleev
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- vanessamatandiko
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