Question 7&8 Phase 1 Week 1 5-PS1-4 NJSLA-Science Review

Front

What happens when a cold pack is squeezed?

Back

The section that holds the liquid breaks, allowing the liquid to mix with the powder.

Front

Why does the temperature of the cold pack decrease when the liquid and powder combine?

Back

A chemical change occurs.

Front

What is the water cycle?

Back

The continuous process of water evaporating, condensing, and precipitating.

Front

What happens to the weight of a closed container of water after some water evaporates?

Back

The container weighs the same as it did 2 days ago.

Front

What happens to the weight of a piece of paper when it is torn into smaller pieces?

Back

The weight stays the same.

Front

What is a mixture?

Back

A combination of two or more substances that retain their individual properties.

Front

What is a solution?

Back

A homogeneous mixture where one substance is dissolved in another.

Front

What is thermal energy?

Back

The energy that comes from the temperature of matter.

Front

What is the effect of temperature on the solubility of sugar in water?

Back

Sugar dissolves better at higher temperatures.

Front

What is mass?

Back

The amount of matter in an object, usually measured in grams.