Science Rules Period KW7

Bonds

100

What is the definition of a covalent bond?

A bond that occurs between non-metals.

200

What is the weakest molecular bond?

Hydrogen Bond

300

What charge is a non-polar covalent bond?

Neutral

400

Sodium Chloride is a(n) ________ bond.

Ionic

500

What structure is a Metallic Bond?

Lattice-like

Reactions

100

What is the equation for a combination reaction?

A+B=C

200

What is the equation for a decomposition reaction?

AB=A+B

300

True of False

An exothermic reaction absorbs heat

True

400

What is the equation for a single replacement reaction?

A+BC=AC+B

500

What is the equation for a Double Replacement Reaction?

AB+CD=AD+CB

Balanced

100

Balance this equation

H₆+O₃-->H₂O

H₆+O₃-->3H₂O

200

Balance this equation

N₂+H₂-->NH₃

N₂+3H₂-->2NH₃

300

Balance this equation

NaCl+F₂-->NaF+Cl₂

2NaCl+F_2-->2NaF+Cl₂

400

Balance this Equation

CH₄+2O₂-->CO₂+H₂O

CH₄+2O₂-->CO₂₊2H₂O

500

Balance this equation

Na+O2-->Na2O

4Na+O2-->2Na2O

Chemical and Physical

100

Which is a Chemical Property of a marshmallow?

1. Tasty

2. Fluffy

3. Flammable

Flamable

200

A change in color is an example of a _________ change.

Chemical

300

What is an example of a physical change?

Answers may vary

400

What is an example of a Chemical Change?

Answers may Vary

500

How can you observe a physical change?

without changing the composition of the matter

Elements

100

How many neutrons does Hydrogen have?

0

200

What is the symbol for silver?

Ag

300

How do you find the number of neutrons in an atom.

mass-atomic number=neutrons

400

How many transition metals are there?

38

500

Who created the Periodic Table?

Demitri Mendeleev