Chemical Reactions

Chemical Reactions

100

One of the following is NOT a physical change: splitting wood, melting ice, burning wood or dissolving salt in water.

What is burning wood?

200

In a chemical reaction the substances to the right of the arrow are called this/these?

What is/are products?

300

Means “the same”, Looks the same throughout, Usually a solution because particles are dissolved evenly

What is a Homogeneous Mixture?

400

When balancing an equation, these numbers can not be changed.

What is a subscript?

500

Give three examples of details showing that a chemical change has taken place.

What is temp. change, color change, odor change, formation of a precipitate, formation of a gas?

Chemical Reactions II

100

In the formula 5CaSO₄, this is the number of oxygen atoms.

What is 20?

200

DOUBLE JEOPARDY!!!!!!!!!!

C₃H₈ + O₂ ----> 3CO₂ + 4H₂O + heat

is this type of chemical reaction. Look at the products!!

combustion

300

Balance the following chemical reaction:

H₂ + NaCl --> HCl + Na

H₂ + 2NaCl --> 2HCl + 2Na

400

DOUBLE JEOPARDY!!!!!!!!!!!!!

A solid that forms from a solution during a chemical reaction.

a precipitate

500

Balance the reaction: Na + H2O --> NaOH + H2

What is 2Na + 2H₂O --> 2NaOH + H₂

Chemical Reactions III

100

A substance that enters a chemical reaction is called this.

What is a reactant?

200

This type of CHANGE occurs when a substance or multiple substances rearrange, in which a new substance is created.

What is a chemical change?

300

DOUBLE JEOPARDY!!!!!!!!!

An expression in which symbols and formulas are used to represent a chemical reaction.

A chemical equation

400

State the Law of Conservation of Mass.

What is that matter can not be created or destroyed in a chemical reaction?

500

The reaction 2HgO ---> 2Hg + O is an example of this type of reaction.

What is decomposition?

Polarity

100

A molecule in which two atoms equally share electrons.

What is nonpolar?

200

What property of an atom determines if it will make a polar/nonpolar bond?

What is electronegativity?

300

Classify these molecules as polar or nonpolar:

1. H₂O

2. H₂

 

What is polar and nonpolar?

400

A molecule in which dipoles (polarities) of polar bonds do NOT cancel out.

What is a polar molecule?

500

Draw an image of a C₂H₄ molecule and tell me if it is polar or nonpolar.

Nonpolar

BTS

100

What date did BTS debute?

June 12, 2013

200

All the members of BTS have 1 tattoo in common. What is it?

a. ARMY

b. 2013

c. 7

d. BTS

e. Borahae (in Korean)

The number 7 (representing 7 members)

300

Who are the three rappers of BTS AND which of them were underground rappers before joining BigHit?

Jhope, RM, and Suga

400

Who is the "dance line" of BTS and which one is the dance leader?

Jimin, JK, V, Jhope (dance leader)

500

Name 4 Western artists BTS has collaborated/performed with. 

Steve Aoki, Coldplay, Nicki Minaj, Megan Thee Stallion, The Chainsmokers, Halsey, Jason Derulo, Ed Sheeran, Juice WRLD, Snoop Dog, Lauv, Charlie XCX, Sia