SCIENCE4-FIRST-QA-REVIEWER 2

Timmy mixed some sugar into his glass of water until it dissolved completely. What type of change occurred when the sugar dissolved in the water?

• Physical change

• Chemical change

• No change occurred    

• Both physical and chemical changes

Which of the following is an example of a physical change involving a change of state?

• Rust forming on an iron nail

• Paper burning and turning into ashes

• Ice melting into water

• Milk spoiling and curdling

Maria was baking cookies in the oven. As the cookies were baked, they turned golden brown and became firm. What type of change occurred to the cookies during baking?

• Physical change

• Chemical change

• No change occurred

• Both physical and chemical changes

Jason was cleaning his bicycle after a ride. He noticed that the metal parts were starting to rust. Why is it important for Jason to prevent rust from forming on his bicycle?

• To make his bicycle look shiny and new

• To avoid damaging the metal parts of his bicycle

• To impress his friends with his well-maintained bicycle

• To win a prize for the best-looking bicycle

Anna was planning to cook dinner for her family. She needed to know whether cooking chicken in the oven would result in a physical or chemical change. Why is this important for Anna to consider?

• So she can impress her family with her cooking skills

• So she can choose the best cooking method for the chicken

• So she can avoid making a mess in the kitchen

• So she can win a cooking competition

Which of the following materials is biodegradable?

• Cardboard

• Plastic drinking straw             

• Nylon fishing line

• Styrofoam packaging

What happens to a banana peel when it is discarded in a natural environment? 

• It turns into a new banana

• It decomposes into simpler organic compounds 

• It disappears right away 

• It stays the same forever

1. Dianna wants to dispose of her plastic water bottle. Plastic is harmful to the environment, so she wants to choose an eco-friendly option. Which of the following materials should Sarah choose if she wants a biodegradable option? 

• Aluminum can                      

• Glass bottle                           

• Reusable cup

• Plastic water bottle

1. Tom is experimenting in his science class. He wants to observe how different materials react with vinegar. Which of the following materials is most likely to produce bubbles when mixed with vinegar?

• Baking soda 

• Metal paperclip

• Glass marble    

• Plastic drinking straw

1. Alex lit a candle and observed as the wax melted and formed a pool of liquid around the wick. What type of change occurred to the wax during burning?   

• Physical change

• Chemical change

• No change occurred

• Both physical and chemical changes