WorksheetsSIMPLE CHEMICAL REACTION PART I
Total questions: 15
Worksheet time: 8mins
A change in matter that produces one or more new substances is a ________________ change.
physical
chemical
A _____________ change is any change that alters the form or appearance of a substance but does not change it into another substance.
physical
chemical
In a chemical reaction, the _____________ are always written on the right side of the equation
reactants
coefficients
products
subscripts
A gel ice pack getting cold after you put it in the freezer for an hour - physical or chemical change?
Chemical Change
Physical Change
Turning on a Bunsen burner - physical or chemical change?
Chemical Change
Physical Change
Which of the following IS a physical change?
Getting a haircut
Milk going sour
Rusting metal
A new compound being made
Chemical change are usually accompanied by the exchange of energy with the surroundings
True
False
What happens to the chemical structure of water when it changes state?
Water molecules break apart to form individual atoms
Water molecules melt into gas molecules
Water molecules harden into ice molecules
Nothing happens to the chemical structure
What will happen if you keep increasing both the pressure and temperature of a liquid?
It will boil
It will melt
It will transpire
It will solidify
What is the left part of a chemical equation called?H2 + O → H2O
Reactants
Yields
Products
Chemical Equation
a chemical reaction has occurred if
there is a precipitate
there is a temperature change
there is a color change
All of these answers are evidence
...... is the process of breaking down a substance into simpler substances by heat
Combination
combustion
thermal decomposition
physical reaction
When dilute acids react with certain metals, hydrogen gas is produced.
True
False
When a dilute acid react with carbonates, what is the product form?
metals
carbon dioxide
oxygen
Nitrogen
A chemical reaction in which a substance burns in oxygen is known as ....
combustion
combination
