Answers: 2. valence electrons 3. a bond formed when atoms share one or more pairs of electrons. 4. chemical formula 5. a. calcium - 2 b. carbon - 4 c. sulfur - 6 6. a. electrons 7. the elements that make up water can't be split into a simpler form, but water can. water is a liquid at room temperature, oxygen and hydrogen are gases at room temperature.
8. because it is made of oxygen and hydrogen and one is partially negative and one is partially positive.
The porpoise would hear its echo first because sound travels faster in water than in air. The bat would hear its echo first because the amplitude of sound waves ...
At 12 mph, how long does it take to go 13.1 miles?
We know that distance = rate * time So we know that 13.1 = 12 * time We can now see that time = 13.1/12 = 1.092 (hours) That's approximately 1 hour and .092*60=5.52 minutes.
