Counting Atoms & Balancing Equations

Front

How many different elements are present in H₂COCH₂?

Back

3

Front

Calculate the number of Oxygen atoms in Al(OH)₃

Back

3

Front

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)? __Na + __H₂O --> __NaOH + __H₂

Back

2,2 --> 2,1

Front

What are the numbers found on the lower right-hand side of an element symbol?

Back

Subscript

Front

Coefficients in chemical formulas...

Back

Multiply EVERYTHING!

Front

4CF₂Cl₂

Back

C = 4, F = 8, Cl = 8

Front

H₂SO₄

Back

H = 2, S = 1, O = 4

Front

How many different elements are present in this molecule? 3 NH₄C₂H₃O₂

Back

4

Front

A ______ is a number written in front of a chemical formula.

Back

Coefficient

Front

2H₂ + O₂ ----> 2H₂O What is the product?

Back

2H₂O