# data[].attributes.body
Conservation of mass is when mass can't be created or destroyed.

# data[].attributes.headline
Checkpoint 2b, question 5: Describe and model conservation of mass based upon lab experience.

# data[].attributes.subject
Checkpoint 2b, question 5: Describe and model conservation of mass based upon lab experience.

# data[].attributes.headline
Checkpoint 2b, question 4: Formulate claim, evidence, and reasoning statements based upon analysis of a lab experience.

# data[].attributes.subject
Checkpoint 2b, question 4: Formulate claim, evidence, and reasoning statements based upon analysis of a lab experience.

# data[].attributes.body
When we were making the cold pack I can claim that I didn't do it right because it didn't have a big enough chemical reaction or not enough color or bubbles so it got up to 20 degrees but it was supposed to be below 5 degrees.

# data[].attributes.headline
Checkpoint 2b, question 3: Collect and analyze data.

# data[].attributes.subject
Checkpoint 2b, question 3: Collect and analyze data.

# data[].attributes.body
I have a data sheet from previous lessons on chemical and physical reaction (elephant toothpaste, upset tummy, etc.) that is all my collected data.

# data[].attributes.headline
Checkpoint 2b, question 2: List evidence of a chemical reaction.

# data[].attributes.subject
Checkpoint 2b, question 2: List evidence of a chemical reaction.

# data[].attributes.body
A chemical reaction is when a substance or more causes the substance that is in the cup, bowl, or whatever your using to start to bubble and/or change color and/or fizz, etc. I can claim this with my evidence, chemical reactions are chemical changes and I know that it can change in Oder, temperature, energy, etc. Also exothermic means loss of heat which proves that it can be a chemical reaction.

# data[].attributes.headline
Checkpoint 2b, question 1: Descriminate reactants and products.

# data[].attributes.subject
Checkpoint 2b, question 1: Descriminate reactants and products.

# data[].attributes.body
Reactants are substances that either make the substance that it's in (for example: water) creates a chemical or physical reaction. The product is what you get afterward from the reactant or the final substance left in the water.

# data[].attributes.headline
Checkpoint 2a, question 2: Build models of molecules that vary in complexity.

# data[].attributes.subject
Checkpoint 2a, question 2: Build models of molecules that vary in complexity.

# data[].attributes.headline
Checkpoint 2a, question 1: Build models of simple molecules.

# data[].attributes.subject
Checkpoint 2a, question 1: Build models of simple molecules.

# data[].attributes.headline
Checkpoint 1, question 2 answer: Phase Change can be explained in qualitative data because it's appearance is either solid liquid or gas. It can be any size, gas can be spread out and energetic, liquid will stay together but also spread a little bit and solid will stay close together. Phase Change can be explained in quantitative data because solids can be weighed and measured.

# data[].attributes.subject
Checkpoint 1, question 2 answer: Phase Change can be explained in qualitative data because it's appearance is either solid liquid or gas. It can be any size, gas can be spread out and energetic, liquid will stay together but also spread a little bit and solid will stay close together. Phase Change can be explained in quantitative data because solids can be weighed and measured.

# data[].attributes.headline
Checkpoint 1, question 2: Collect and interpret qualitative and quantitative data to explain phase change.

# data[].attributes.subject
Checkpoint 1, question 2: Collect and interpret qualitative and quantitative data to explain phase change.

# data[].attributes.body
Press Open in window, checkpoint 1 question 1.

# data[].attributes.attachment_link.title
Charlie Kraker - 5th Period Science - Matter Interaction: Checkpoint 1, 2a, 2b

# data[].attributes.headline
Checkpoint 1, question 1: Draw and label a diagram to explain the relationship between phase change and energy.

# data[].attributes.subject
Checkpoint 1, question 1: Draw and label a diagram to explain the relationship between phase change and energy.