Part 2 of 4 States of matter

Mr. Johnson’s science class is studying matter. It’s “Fun Food Friday” and he wants to find a food-related activity that would demonstrate a physical change. Which activity should Mr. Johnson choose?

• boiling eggs

• baking cookies

• making waffles

• melting juice bars

What evidence should Nathan and Nancy record in their data table to prove that a chemical change has occurred?

• Bubbles formed after Part A and Part B were mixed together.

• A brown solid formed at the bottom of the beaker after Part A and Part B were mixed together.

• A brown solid formed at the bottom of the beaker and bubbles formed after Part A and Part B were mixed together.

• The temperature increased, a brown solid formed at the bottom of the beaker, and bubbles formed after Part A and Part B were mixed together.

Kirby completed an investigation that caused a chemical change and a product was formed. Which investigation could Kirby have completed?

• Kirby mixed a solid into a liquid until the solid dissolved.

• Kirby mixed two liquids together, and they mixed together completely.

• Kirby combined two solids together in a mixture that could be taken apart.

• Kirby mixed two liquids together, and a solid formed when they were mixed together.

Sam places a glass of ice cubes on the counter. He measures the temperature of the ice. It measures 30 degrees Fahrenheit. He leaves the glass sitting out overnight. In the morning, there is liquid in the glass. Sam measures the temperature. The substance measures 70 degrees Fahrenheit. What conclusion can Sam make based on this evidence?

• As the temperature increased, there was a physical change from a solid to a liquid.

• As the temperature increased, there was a chemical change from a solid to a liquid.

• As the temperature increased, there was a physical change that released a gas from a liquid.

• As the temperature increased, there was a chemical change that released a gas from a liquid.

Latasha wanted to conduct an investigation to produce a chemical change. Which of the following can Latasha use to provide evidence that a chemical change occurred during her investigation?

• The change can be reversed.

• A new substance will be created.

• The investigation will result in a change of shape.

• There will be a change of state from a solid to a liquid.