Chemical and Physical Changes- with examples

Multiple Choice

What happens to particles during a physical change?

• New substances are formed

• Particles disappear

• Particles just move around

• Particles change color

Multiple Choice

Based on the diagrams in slides 1 and 2, what is a common characteristic of physical changes such as cutting and dissolving?

• They always involve heat

• They create new substances

• Particles just move around without forming new substances

• They change the color of the substance

Open Ended

Explain how matter changes during a physical change, using examples from the slides.

Multiple Select

Which of the following are examples of physical changes?

• Burning wood

• Melting ice

• Dissolving sugar in water

• Rusting iron

Open Ended

Describe a situation where a physical change can be reversed, as explained in the slides.

Multiple Choice

Which of the following is NOT an example of a chemical change?

• Burning wood

• Rusting iron

• Melting ice

• Milk going sour

Open Ended

What are the four common outcomes of all chemical changes?

Multiple Select

Based on the diagrams, which statements are true about the formation of water from hydrogen and oxygen?

• Water is a new substance.

• Water has the same properties as hydrogen and oxygen.

• New chemical bonds have formed between oxygen and hydrogen atoms.

• Water has a new composition.

Multiple Choice

During a chemical change, what happens to the particles?

• They disappear completely.

• They change or rearrange to form new substances.

• They remain exactly the same.

• They split into smaller pieces.

Open Ended

Explain why water has different properties from hydrogen and oxygen, even though it is made from these two elements.

Multiple Choice

Which of the following is NOT an evidence of a chemical change?

• Fizzing

• Burning

• Melting

• Corrosion

Multiple Select

Which of the following are examples of chemical changes?

• Soured milk

• Effervescent tablets bubbling

• Cutting paper

• Logs burning

Multiple Choice

Is crushing an aspirin a chemical change or a physical change?

• Chemical Change

• Physical Change

• Both

• Neither

Multiple Select

Which of the following examples represent a chemical change?

• Crushing an aspirin

• Metal rusting

• An egg rotting

• An egg breaking

Multiple Choice

What is the main difference between a physical change and a chemical change?

• A physical change alters the composition of a substance, while a chemical change does not.

• A chemical change alters the composition of a substance, while a physical change does not.

• Both physical and chemical changes alter the composition of a substance.

• Neither physical nor chemical changes alter the composition of a substance.