science dr Bob

I think I might have gotten htese two incorrect

atoms are small ahrd particles - I put Democritius

An atom is the smallest peice of matter - I put Dalton

Are these correct

  1. 0
  2. 0
asked by sam
  1. #1 I don't know. The idea of atoms being small hard particles is hard for anyone to explain, for example, why oxygen gas isn't hard or nitrogen gas isn't hard.
    #2.I would answer Democritus for this although he had no evidence to prove what he thought.

    posted by DrBob222

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry (The Composition of an Atom)

    In 1808, John Dalton wrote his atomic theory of matter. The following is a list of points from that theory. If it is still considered true today, label it true. If it is not considered true today, label it false. 1)Atoms cannot be
  2. science

    1.which two particles are found in an atoms nucleus? 2. which two particles in an aton are equal in number? 3. what two particles account for almost all of the mass of an atom?
  3. Science

    How are elements and compounds alike? Both consist of small particles called atoms.
  4. science

    Having a hard time understanding "representative particles". ie. which are atoms, compounds etc. For example, what is the representative particle for sodium fluoride? carbon monoxide? Atoms are the smallest unit of an element.
  5. Science

    1) Instead of using the word "random",is it acceptable to say particles in a liquid move about in "different" directions? 2) Why does ice have a higher density than water vapour? Is it because ice has a greater mass in a fixed
  6. science

    The modern atomic model includes electrons orbiting the nucleus. Which of the following parts of Dalton's atomic model was disproved by the discovery of the electron? - Atoms are tiny particles. - Atoms cannot be divided into
  7. science dr bob

    I thought i was done but I am confused on these two. 1. In a natom electrons are located in energy levels that are a certain distance from the nucleus. I put rutherford. and I am still left with atoms are small hard particles -
  8. math

    The table shows the position of a cyclist. t (seconds) 0 1 2 3 4 5 s (meters) 0 1.4 5.4 10.8 17.4 24.6 (a) Find the average velocity for each time period. (i) [1, 3] 4.45 Incorrect: Your answer is incorrect. m/s (ii) [2, 3] 5.5
  9. chemistry

    Calculate the density of atoms in (001) in lithium (Li). Express your answer in units of atoms/cm2. incorrect
  10. Physics 1

    This is a repost....:Two small particles of mass 16 kg and 27 kg are a distance 1.4 m apart. What is the gravitational force of one of these particles on the other?_____N

More Similar Questions