Atoms vs Molecules
Physical and Chemical Properties
Physical and Chemical Changes
Is it a Chemical Reaction?
Signs of a Chemical Reaction
100
What is the smallest unit of matter?
What is an atom?
100
What are characteristics that can be observed without changing the substance?
What are physical properties?
100
What is a change that does not result in a new substance being created?
What is a Physical Change?
100
True or False: A chemical reaction occurs when products and reactants are the exact same.
What is False?
100
When cracking a glowsticks and the sticks illuminates, this is an example of which sign?
What is Light Production?
200
What is a group of two or more atoms bonded together?
What is a molecule?
200
What property describes how a substances reacts with other substances?
What is a chemical property?
200
What type of change occurs when a substance combines with a new substance to form a new substance?
What is a chemical change?
200
Label the products and reactants in this reaction.
Reactants: C2H5OH and 3O2
Products: 2CO2 and 3H2O
200
True or false: A chemical reaction has occurred when mixing two mystery liquids and the temperature decreases.
True
300
Is the image displayed an atom or a molecule?
Molecule
300
Give 3 examples of a physical property
Color, Shape, Size, Density, Toughness, Hardness, Luster, Melting Point, Boiling Point, Smells, etc.....
300
Ripping a piece of paper in half is an example of this type of change.
Physical Change
300
Grilling a steak is an example of a chemical reaction.
What is yes?
300
True or False: Boiling a substance is a sign of a chemical reaction.
What is False?
400
Is the image displayed an atom or molecule?
Atom (Neon)
400
Flammability is an example of what property?
Chemical
400
Rust forming on iron is an example of this type of change
What is a chemical change?
400
Is the image below an example of a chemical reaction?
Yes!
400
What might be an indication of a gas being produced in a reaction?
What is formation of bubbles?
500
Is the image displayed an atom or molecule?
Molecule (Oxygen gas)
500
What are two physical properties of the substance in the image?
Judge written answers
500
Melting Ice is an example of this type of change?
Physical Change
500
What is the definition of a chemical reaction?
When atoms rearrange to form a new substance.
500
When two liquids mix to form a solid, this is an example of this type of chemical sign
What is precipitate formation?