Vocabulary that Matters
Chemicals Don't Reason they React
Balancing Act
Who Dat?
More vocabulary that matters
100
When one or more substances are changed into new substances is called this.
What is a chemical reaction?
100
In chemical reactions the -> symbol stands for this.
What is yields? or
What is to make?
100
When the number of atoms are equal on both sides of the equation, this law has been fulfilled.
What is the Law of Conservation of Mass?
100
Color and shape are two types of these characteristics?
What are physical properties?
100
Characteristics of substances that can be observed with the senses or measured with a tool. The substances does not need to be changed to observe them. Each substance has its own unique set of these.
What are physical properties?
200
When the number of atoms is equal on each side we say that the equation is this.
What is balanced?
200
These 3 things are essential in writing a chemical equation.
What are reactants, an arrow, and products?
200
These are used to help balance chemical equations.
What are coefficients?
200
Flammability and toxicity are two types of this.
What are chemical properties?
200
Characteristics of a substance that cannot be observed unless you change the substance. Each substance has its own unique set of these.
What are chemical properties?
300
The molecules or compounds that are on the left hand side of the arrow in a chemical reaction. They are the ones who are going to interact.
What are the reactants?
300
In the chemical reaction, Mg + O -> MgO, the compound MgO is located on this side of the equation.
What is the product side?
300
Balance the following equation. You must show all work and simplify your answer! Li + Br2 --> LiBr
2Li + Br2 --> 2LiBr
300
MaBr2 is a...... (type of substance)
These must have two different types of atoms in them.
What is a compound?
Yes it is also a molecule.
300
The number that is located in front of a molecule's formula in a chemical reaction equation.
The 3 in 3H2 is an example.
What is a coefficient?
400
The molecules or compounds that are on the right hand side of the arrow in a chemical reaction. They are the result of the reaction.
What is a product?
400
An equation that releases more energy when products form than is needed to break the bonds of the reactants.
What is exothermic?
400
Balance the following chemical equation. You must show all work and simplify your answer. Fe + O2 --> Fe2O3
4 Fe + 3O2 --> 2Fe2O3
400
A student runs an experiment: They combine two substances together. They observe a glowing bit of light and bubbles. These observations are an indication of.........
What is a chemical reaction/change?
400
The small number to the lower right corner of an atom's symbol is called this.
The 2 in 3H2 is an example.
What is the subscript
500
A reaction where the energy needed to break the bonds of the reactants is more than what is released when products form.
What is endothermic?
500
This equation demonstrates that a chemical reaction has occurred because it shows an important clue. That clue is
What is the production of a new substance (product)?
500
H2 + O2 = H2O
A student was asked to balance the equation above.
This is their answer: H2 + O = H2O
Their error is this.....
What is changed the subscript instead of coefficients?
500
This type of reaction.
What is an exothermic reaction?
500
Chemical reactions between substances results in old bonds being broken and new bonds being formed. Bonds are formed when atoms do this.
What are share or give/take electrons?