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Which of the following equations is balanced? (note the numbers behind the symbols should be subscripts)
2H2 + O2 --> 2 H2O
Sulfur
0-14
8 Hydrogens, 4 Oxygens
salt and pepper
neutral or pure water
molecules
compounds
Which of the following is NOT metal?
2H2 + O2 --> 2 H2O
Sulfur
0-14
8 Hydrogens, 4 Oxygens
salt and pepper
neutral or pure water
molecules
compounds
The smallest part of a COMPOUND, made up of two or more elements
2H2 + O2 --> 2 H2O
Sulfur
0-14
8 Hydrogens, 4 Oxygens
salt and pepper
neutral or pure water
molecules
compounds
Pure substances that are composed of two or more types of elements, can only be changed into simpler substances by chemical changes
2H2 + O2 --> 2 H2O
Sulfur
0-14
8 Hydrogens, 4 Oxygens
salt and pepper
neutral or pure water
molecules
compounds
What is the range of the pH scale?
2H2 + O2 --> 2 H2O
Sulfur
0-14
8 Hydrogens, 4 Oxygens
salt and pepper
neutral or pure water
molecules
compounds
Which of the following is a mixture?
2H2 + O2 --> 2 H2O
Sulfur
0-14
8 Hydrogens, 4 Oxygens
salt and pepper
neutral or pure water
molecules
compounds
What are the correct number of atoms for each element in this sample: 4H2O (The 2 behind the H should be a subscript)
2H2 + O2 --> 2 H2O
Sulfur
0-14
8 Hydrogens, 4 Oxygens
salt and pepper
neutral or pure water
molecules
compounds
When a substance is neither an acid or a base it is ____.
2H2 + O2 --> 2 H2O
Sulfur
0-14
8 Hydrogens, 4 Oxygens
salt and pepper
neutral or pure water
molecules
compounds
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