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WorksheetsPhysical and Chemical change
Total questions: 20
Worksheet time: 10mins
changes affecting the form of a chemical substance, but not its chemical identity.
What is a chemical change?
How two chemicals react with one another when combined
A property that we can measure or observe with our 5 senses or other tools
When two chemicals react with one another to form a new substance
When a change occurs but it does not result in the formation of a new substance
A student mixes yellow powder with water. Which observation would prove a CHEMICAL change occurred?
The powder DISSOLVED in the water
The water turned the COLOR yellow
The water's TEMPERATURE changed
The STATE OF MATTER changed
Which of the following examples provides evidence of a PHYSICAL change?
Wood is burned and releases ash and smoke
Iron rusts over time
When mixed, baking soda and vinegar form gas bubbles
Boiling water bubbles when heated
Which of the following options provides evidence of a CHEMICAL change?
Wood is burned releasing ash and smoke
Rocks separate when soil is sifted
Boiling water bubbles when heated
Salt dissolves in water
Which observations prove a chemical change occurred ?
Dissolving and expected color change
Mixing and dissolving
State of matter change and boiling water bubbles
Unexpected color change and temperature change
When mixing milk and vinegar, a white, chunky, solid substance is formed. What has occurred?
Physical change: state of matter
Chemical change: precipitate
Physical change: freezing
Chemical change: new gas
which of these example is a physical change?
What is a solution?
the substance that dissolves in a solvent
a liquid mixture that contains a solute and a solvent
the liquid in which a solute is dissolved to form a solution
mixture of water and solid that does not dissolve
What is a solute?
the substance that dissolves in a solvent
a liquid mixture that contains a solute and a solvent
the liquid in which a solute is dissolved to form a solution
mixture of water and solid that does not dissolve
What is a solvent?
the substance that dissolves in a solvent
a liquid mixture that contains a solute and a solvent
the liquid in which a solute is dissolved to form a solution
mixture of water and solid that does not dissolve
What is a chemical property?
A property that describes the state of a system
A property observed during a reaction
