Molecules and Compounds (Grade 9)
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Molecules and Compounds
1.
[math]HCO_3^-[/math] is named
- chlorite.
- chlorate.
- hydrogen sulfate.
- hydrogen carbonate.
2.
[math]C_2O_4^(2-[/math] is named
- oxalate.
- peroxide.
- hydroxide.
- carbonate.
3.
[math]C_2H_3O_2^-[/math] is named
- acetate.
- oxalate.
- hydroxide.
- carbonate.
4.
[math]NH_4^+[/math] is named
- cyanide.
- hydroxide.
- hydronium.
- ammonium.
5.
Which element has properties that are similar to neon?
- aluminum
- argon
- arsenic
- silver
6.
How many ions are in 0.5 moles of NaCl?
- [math]1.204 x 10^23[/math]
- [math]3.011 x 10^23[/math]
- [math]6.022 x 10^23[/math]
- [math]9.033 x 10^23[/math]
7.
What is the formula for Nitrous Acid?
- [math]HNO_2[/math]
- [math]NO_2[/math]
- [math]H_2NO_2[/math]
- [math]HNO_3[/math]
8.
What is the formula for Chromium (III) Chlorate?
- [math]Cr_3(ClO_3)[/math]
- [math]CrCl_3[/math]
- [math]Cr(ClO_3)_3[/math]
- [math]Cr_2(ClO_3)[/math]
9.
Which of the following compound does not contain a polyatomic ion?
- sodium carbonate
- sodium sulfate
- sodium sulfite
- sodium sulfide
10.
Water acts as a solvent of ionic compounds because
- water molecules are polar.
- water takes the shape of its container.
- water is found in three states of matter.
- water is a liquid over a wide range of temperatures.
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