The scientists that was the first to organize the elements into a table was

O Dalton

O Boyle

O Mendeleev

O Noble

The half-life of carbon-14 is 5730 years. Explain how to figure out the age of a substance that has 25% carbon-14 remaining. A) Multiply 25% times 5730 years since only 25% of the carbon remains.

the similarities and differences between how both producers and consumer use money.

What are the three factors needed for Newton's Second Law?

Increase of green house gases, due to human activity, is warming the oceans. This causes changes in climate. Name three Earth spheres which interact in this process. Justify your answer.

Imagine standing on a bathroom scale and reading your weight. now lift one foot and read your weight again. does the scale read more, less or the same weight when you are standing on one foot?

Emily jogs 3 laps at the track to warm up. She jogs at 5 mph. Then she runs 3 more laps at 7 mph. What is true about her average speed and her average velocity?

Which of the following elements are the most reactive? beryllium, calcium, magnesium, barium?

1.) State which definition of power below is correct. A.) the energy transferred per hour. B.) the energy transferred. C.) the energy transferred per second. D.) the force over a distance. 2.

Science and technology are closely related, but not the same. Which of the following is most likely a result of technology, not science?

Ashlee pours some quantity of orange juice in a glass. She accidentally breaks the glass and juice spills all over the floor. Which characteristic of the juice will change? A. mass B. State C. Shape D. Volume