Chemical Reactions

Chemical Reactions

100

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

What is/are products?

200

hydrogen + oxygen →  water

Where are the reactants and products in this chemical reaction?

Reactants: hydrogen and oxygen

Products: Water

300

How many Carbons are there in  4NaHCO₃?

4

400

When balancing an equation, these numbers cannot be changed.

subscript

500

How many oxygen are in 2C₆H₈O₇ 

14

Chemical Reactions II

100

What kind of reaction is this:

2Al_(s) + 3H₂SO₄_(aq) → salt(?) + 3H₂_(g)

_{BONUS: Name the salt for an extra 200, write its formula for an additional 300}

Acid + Metal

Bonus: _{Aluminium sulfate -} Al₂(SO₄)₃_(aq) 

200

In the formula 5CaSO₄,how many oxygen atoms do we have?

20

300

Bonus: Can pass to a competitor and they get double points or answer correctly and steal 200 from another team

Balance the following chemical reaction:

H₂ + NaCl --> HCl + Na

H₂ + 2NaCl --> 2HCl + 2Na

400

2 of the same atoms bonded together is called a:

Bonus $200 if you can give an example

Molecule

O₂, H₂, etc

500

Balance the following equation:

NH₄NO₃  --->   N₂O  + H₂O

NH₄NO₃  --->   N₂O  + 2 H₂O

Chemical Reactions III

100

A substance that enters a chemical reaction is called this.

 a reactant

200

How many Aluminum atoms do we have in the products?

Al + O₂  →  Al₂O₃

2

300

Is this a balanced or not balanced equation?

H₂S + NaCl →  HCl + Na₂S

Not balanced

H₂S + 2NaCl →  2HCl + Na₂S

400

The abbreviation (aq) means what?

Aqueous

500

All of the following are examples of chemical change except:

Increase in temperature, release of light, formation of a solid, melting of ice

melting of ice

Chemical Reactions IV

100

When balancing an equation, these numbers can be changed.

a coefficent

200

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

chemical change

300

Bonus $200- name the type of reaction

What will be the products of this reaction:

NaOH + HCl ->

NaCl + H₂O

Neutralisation

400

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?

500

Name the products of a reaction of acid + metal carbonate

BONUS- Steal $200 from a competing team if you can tell me how we test for one of the products

Salt + Water + Carbon dioxide

Test for Carbon dioxide by seeing if it turns limewater cloudy

Chemical Reactions V

100

True or false:

Sometimes during a chemical reaction, one type of atom changes into another type of atom.

False

200

What is it called when both sides of a chemical equation do not have equal numbers of each element?

unbalanced

300

State the Law of Conservation of Mass.

matter can not be created nor destroyed, just rearranged 

400

Balance this equation:

P₄ + O₂ →  P₄O₆

P₄ + 3O₂ →  P₄O₆

500

What is the chemical formula for salt?

NaCl