A chemical reaction is shown below.Fe + H2O → Fe3O4 + H2Unit 2 ReviewWhat are the products in the equation?A Fe3O4 onlyB Fe onlyC Fe and H2OD Fe3O4 and H213 Which of the following occurrences indicates that a chemical reaction has taken place?A An odor is produced by burning a sugar cube.B A puddle is produced by melting an ice cube.C A loud noise is produced by crushing a can.D A shard of glass is produced by breaking a bottle.Critical ThinkingAnswer the following questions in the space provided.14 List three properties of metals that nonmetals typically do not have.Describe where metals and nonmetals are found on the periodic table.What is the name for elements that have some properties of metals and some properties of nonmetals?
Question
A chemical reaction is shown below.Fe + H2O → Fe3O4 + H2Unit 2 ReviewWhat are the products in the equation?A Fe3O4 onlyB Fe onlyC Fe and H2OD Fe3O4 and H213 Which of the following occurrences indicates that a chemical reaction has taken place?A An odor is produced by burning a sugar cube.B A puddle is produced by melting an ice cube.C A loud noise is produced by crushing a can.D A shard of glass is produced by breaking a bottle.Critical ThinkingAnswer the following questions in the space provided.14 List three properties of metals that nonmetals typically do not have.Describe where metals and nonmetals are found on the periodic table.What is the name for elements that have some properties of metals and some properties of nonmetals?
Solution
The products in the equation are Fe3O4 and H2, so the answer is D.
An occurrence that indicates a chemical reaction has taken place is when an odor is produced by burning a sugar cube, so the answer is A.
Three properties of metals that nonmetals typically do not have are:
- Metals are good conductors of heat and electricity.
- Metals are malleable (they can be beaten into thin sheets).
- Metals are ductile (they can be drawn into thin wires).
On the periodic table, metals are found on the left and in the center, while nonmetals are found on the right.
The name for elements that have some properties of metals and some properties of nonmetals is metalloids.
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