Chemical Reactions
Which of the following is an example of a chemical change: splitting wood, melting ice, burning wood or dissolving salt in water.
Burning Wood
In an acid + metal reaction what are the two products?
Salt and Hydrogen
A substance that enters a chemical reaction is called this.
What is a reactant?
When a bath bomb enters water, it performs this action.
A reaction
This type of change in a substance's appearance is not a chemical change and is usually reversible.
What is a physical change?
In a chemical reaction the substances to the right of the arrow are called this/these?
Products
This type of change occurs when a substance or multiple substances rearrange and a new substance is created.
Chemical Change
The original substance or substances in a chemical reaction are this.
Reactant(s)
Is a physical change reversible?
True
What salt would be produced from the below reaction
Zinc Carbonate + Sulfric Acid
Zinc Sulfate
A new odor from a gallon of milk ... A color change that occurs when two clear liquids mix... Baking powder and water bubble and fizz...
What is a sign of a chemical reaction?
Cooking, precipitate forms, bubbles occur, formation of gases, temperature changes, corrosion, tarnishing are examples of this.
What are words to look for to determine if a chemical reaction occurs?
The atomic number of an element is its __________.
Number of Protons
True or False: all parts of a mixture are combined?
False
What components is missing from the below acid and metal equation
Acid + metal -> _______ + hydrogen
Salt
In what type of reaction does burning / oxidation occur?
Combustion
The substance or substances that form in a chemical reaction are this.
What is a product(s)?
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?
Colour, texture, bending, tearing, melting, boiling, dissolving are all examples of this.
Indicators of physical change
Complete the below word equation for an acid and metal reaction
Hydrochloric Acid + Zinc ->
Zinc Chloride + hydrogen
The process in which the building blocks of matter (atoms) are rearranged to produce different substances.
What is the definition of a chemical reaction?
how can we make sure that this reaction has happened:
Zinc + Hydrochloric acid -> Zinc Chloride + Hydrogen
1) splint on fire test
2) bubbles formed inside the liquid