Questions by Raymel

Questions by Raymel

A pure substance that is made of only one kind of atom is called _________. A. an element B. an electron C. a particle D. a proton

asked Oct 7, 2017

2 answers

2 votes

105k views

Adults and children should limit their intake of sodium because

asked Jun 15, 2017

1 answer

5 votes

219k views

When a sound source is moving toward the observer, the observer will hear a higher pitch. This is due to a. a decrease in the amplitude of the sound wave. b. a decrease in the frequency of the sound wave.

asked Mar 5, 2017

1 answer

3 votes

234k views

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