Billy Bob Joe's uncle's brother put yeast into a bowl of water and added a little sugar. He placed the bowl in a warm place and let it sit. After a while, he observed foam spilling out of the bowl. What kind of change is occurring?

Silly Sally Suzy filled 2 balloons with the same amounts of water, sugar, and yeast. She put 1 bowl on a table in her classroom, and the other on a sunny windowsill. Why did Silly Sally Sue observe that the balloon in the window grew larger in size?

Billy Bob Joe's father's cousin's mother is cooking dinner. After Billy Bob Joe's father's cousin's mother adds salt to the boiling water, what will she have in the pot?

Billy Joe Bob took a picnic to a sandy beach. He brought a garden salad and lemonade. Which of these best describes sand, a garden salad, and lemonade?

Which of the following represents a chemical change?

Each state of matter has certain physical properties. Which is a physical property of gas?

Billy tested a control solution at room temperature (25*C), and measured how fast salt dissolved in it. Next, he cooled solution A to 10*C and heated solution B to 40*C. How quickly did the salt dissolve in solutions A and B compared to the control?

Different elements have different kinds of atoms. How can you tell an atom of one element from an atom of another?

Which of these conditions has the greatest effect on how quickly a substance changes from one state to another?

Silly Sally Sue's mom boils water in a pot on the stove to make soup. Which of these ingredients will dissolve in the water?

Silly Sally Sue needs to make a list of the physical properties of matter. Which of these should Silly Sally Sue include in her list?

Each of the states of matter has specific characteristics. Which statement correctly describes one of these characteristics?

Atoms are made up of smaller particles called subatomic particles. Which is a subatomic particle that has no charge?

A scientist is examining two atoms. One has a nucleus with 5 protons and 5 neutrons surrounded by 5 electrons. The other has a nucleus with 5 protons and 6 neutrons, surrounded by 5 electrons. What can he conclude about these two atoms?

Every atom has a center called the nucleus. The nucleus has a positive charge. Which particles are found in the nucleus?

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