Atoms Question Preview (ID: 38314)

1st Test Material.

Atoms combine to form what?
a) molecules
b) electrons
c) protons
d) atoms

J.J. Thomson and Ernest Rutherford would agree that
a) protons and electrons have different charges
b) protons and electrons exist in the nucleus
c) atoms have more protons and electrons
d) neutrons exist in the nucleus

Rutherford's experiment conflicted with Thompson's model because it showed that
a) the atom contains a nucleus with protons and neutrons.
b) the atom is full of a positively charged substance
c) the atom is composed of mostly empty space
d) the atoms contains positively and negatively charged particles.

Thomson was the first scientist to experimentally question
a) the existence of positive and negative particles within the atom
b) the existence of a nucleus within the atom
c) the existence of the atom
d) the existence of neutrons

An atom of vanadium (V) has 23 protons and 28 neutrons. How many electrons does a neutrally charged atom of vanadium have?
a) 23
b) 51
c) 28
d) 5

Any atom that has 13 protons is an aluminum atom. Which statement best describes what would happen if a proton were added to an aluminum atom?
a) The atom would no longer be aluminum.
b) The atom would have a smaller atomic number.
c) The atom would have a positive charge.
d) The atom would lose electrons

Which of these statements describes a fact about an atom’s nucleus?
a) It is made of neutrons and protons.
b) It is the same size in all atoms.
c) It is smaller than an electron.
d) t is negatively charged.

Atoms are a basic building block of certain types of matter. Atoms make up the elements that combine to form compounds to make up much of what we use every day. Which of these substances is NOT made out of atoms?
a) protons
b) carbon dioxide
c) trees
d) oxygen

Electrons are never found in-
a) a nucleus
b) an electron cloud
c) energy shells
d) energy levels

I said that matter was made of small particles called atomos
a) Democritus
b) Thompson
c) Rutherford
d) Aristotle

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