Chemical Reactions
Chemical Reactions II
Chemical Reactions III
Chemical Reactions IV
Chemical Reactions V
100
One of the following is a chemical change: splitting wood, melting ice, burning wood or dissolving salt in water.
What is burning wood?
100
If the total mass reactants in a chemical reaction is 500 grams than what will be the total mass of the products?
500 grams
100
A substance that enters a chemical reaction is called this.
What is a reactant?
100
What happens when baking soda and vinegar are combined?
A Chemical Reaction
Bubbles Form
100
This type of change in a substance's appearance is not a chemical change and is usually reversible.
What is a physical change?
200
In a chemical reaction the substances to the right of the arrow are called this/these?
What is/are products?
200
A rock with a mass of 128g and a volume of 32mL has a density of what?
Formula: Density=Mass/Volume
4g/mL
200
This type of change occurs when a substance or multiple substances rearrange and a new substance is created.
What is a chemical change/reaction?
200
Daily BONUS:
Photosynthesis and Cellular Respirations are_____
Chemical Reactions
200
Give an example of a molecule?
NH3, CH4, H2O, H2, O2, N2,
300
Color change(not painting something) is a __________change
Chemical
300
Name the gases involved in photosynthesis and cellular respiration reactions.
Oxygen and Carbon Dioxide.
300
An expression in which symbols and formulas are used to represent a chemical reaction.
A chemical equation
300
Bubbles formation after two substances are mixed is a sign of a ____________________.
Chemical Reaction
300
State the Law of Conservation of Mass.
What is "matter can not be created or destroyed in a chemical reaction"?
400
Number of atoms before and after a chemcial reaction is __________________
Same
400
True or False
Is this a balanced chemical equation?
2H2 + O2 --> 2H2O
True
400
An increase in temperature will usually cause the rate of movement in different states of matter particle to ________________.
What is increase?
400
What is the total number of atoms present in 2H2O
6
400
This Contains 2 or more different elements chemically combined, also categorized as a molecule
What is a Compound?
500
Give three examples that a chemical change has taken place.
What is temp. change, color change, odor change, formation of a precipitate, formation of a gas?
500
What does law of conservation of mass states?
Mass can neither be created nor can it be destroyed.
500
The type of energy that a particle has when it is in motion
What is kinetic energy?
500
What is NH3?
Ammonia
500
CO2 Molecule