Answer:
I think its By sound waves..
9. Mixing baking soda and vinegar leaves behind water and salt. This is an example of mixing ________ and __________. Is it a chemical or physical reaction?
Answer:
Mixing baking soda and vinegar is a chemical reaction. I’m not so sure about the fill in the blanks.
Explanation:
It is a chemical change due to the formation of gas and the change in temp.
Which of the following is considered a standard unit of length in the United States?
A:square inch
B:cubic yard
C:yard
D:acre
Answer:
yard
Explanation:
Answer:
c
Explanation:
Willa holds a pan over a campfire, as shown in the figure below. She feels warmth from the fire.
Most of the warmth Willa feels comes from the process represented by letter Z. What is this process ?
Answer:
thermal radiation/ transfer of heat
Answer:
thermal radiation
Explanation: