Periodic Table/Atoms
Chemical vs Physical
Wild Card
Endothermic vs Exothermic
Rate of Reaction
100
What is the atomic number of Nitrogen?
8
100
Is crushing a can Chemical or Physical change?
Physical
100
What is an Independent Variable?
The variable that is being manipulated. (What I change)
100
Endothermic Reactions are ...
Reactions that absorb energy.
100
What is one way we can increase the rate of reaction?
- Increase surface area
- Increase temperature
- Introduce a catalyst
- Condense Concentration
200
What is the column of the period table called?
Group
200
Is Digesting food an example of a Chemical or Physical change?
Chemical
200
What is the charge on a proton?
+1
200
Is an ice pack (cold pack) an example of endothermic or exothermic reaction?
Endothermic
200
What is Activation Energy?
The minimum amount of energy required to start the reaction
300
What particle determines what element an atom is?
The number of protons.
300
What are 2 signs a chemical reaction has occured?
- Bubbling or gas being produced
- Colour change
- Temperature change
- Precipitate forming
- Smell change
300
What is the reactant?
The starting substance in the chemical reaction
300
Exothermic reactions are ....
Reactions that release Energy
300
Is the product on the left or right side in a chemical reaction?
Right side
400
An atom has 13 protons and 14 neutrons. What is the mass number?
27
400
If a new substance is formed is it Chemical or Physical?
Chemical
400
What does the C stand for in CER (Scientific Writing)
Claim - An answer to the question
400
What type of reaction is this?
Endothermic
400
How does a catalyst work?
It decreases the activation energy.
500
Why are noble gases chemically unreactive?
The atoms have a full outer shell of electrons
500
Is melting candle wax a chemical or physical change?
Melting candle wax - physical
Burning the candle - chemical
500
What is an Isotope?
A version of a particular chemical element that have the same number of protons and electrons but differ in the number of neutrons in their nucleus.
500
What is happening in the reaction for it to result in an Exothermic reaction (increase in temperature)?
Breaking bonds
500
How does surface area impact the rate of reactions and why?
It increases reaction as it exposes more particles causing more opportunity for collision.