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Sort these substances into elements and compounds: Ca, CH4, H2, HCI, MgO, Ne, O2, SO2
Elements: Ca, H2, Ne, o2. Compounds: CH4, HCI, MgO, SO2
1 of 9
What are the names and numbers if the particles in an atom of sodium (atomic number 11, mass number 23)?
11 Protons, 11 Electrons.
2 of 9
What determines the order of the elements in the periodic table?
In order of atomic numbers (proton number)
3 of 9
Explain why boron and aluminium are both in the same group in the periodic table
Both have 3 (same number of) electrons in their highest energy level (outer shell).
4 of 9
Name the type of bonds in each of these compounds: CaO, C2H6, H2O, O, KCI, LiCL, MgCI, NH3, Na2O, PCI3
CaO ionic, C2H6 covalent, H2O covalent, KCI ionic, LicI ionic, MgCI ionic, NH3 covalent, Na2O ionic, PCI covalent
5 of 9
Explain what happens to the atoms when a sodium atom reacts with a chlorine atom.
Sodium atom loses an electron and becomes a sodium ion with a positive charge, chlorine atom gains a electron and becomes a chloride ion with a negative charge
6 of 9
The equation for a reaction of lead nitrate is: pb(NO3) + 2KI--->2KNO + pbI. A) write a word equation for this reaction. B) give the name and number of each type of atom in the products.
a) lead nitrate + potassium iodide ---> potassium nitrate + lead iodide B) 2 potassium atoms/ions, 6 oxygen atoms, 1 lead atom/ion, 2 iodine atoms/iodide ions
7 of 9
Calcium carbonate decomposes when heated to produce calcium oxide and carbon dioxide. 20.0 g of calcium carbonate produced 11.2g of calcium oxide. what mass of carbon dioxide would be produced?
8.8g
8 of 9
balance these symbol equations out: A) Ca + O2--> CaO B) Na + H2O--> NaOH + H2 C) CH4 + O2--> CO2 + H2O
A) 2Ca + O2 ----> 2CaO B)2Na + 2H2O---> 2NaOH + H2 C) CH4 + 2O2----> 2H2O
9 of 9

Other cards in this set

Card 2

Front

What are the names and numbers if the particles in an atom of sodium (atomic number 11, mass number 23)?

Back

11 Protons, 11 Electrons.

Card 3

Front

What determines the order of the elements in the periodic table?

Back

Preview of the front of card 3

Card 4

Front

Explain why boron and aluminium are both in the same group in the periodic table

Back

Preview of the front of card 4

Card 5

Front

Name the type of bonds in each of these compounds: CaO, C2H6, H2O, O, KCI, LiCL, MgCI, NH3, Na2O, PCI3

Back

Preview of the front of card 5
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