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PHILLIPS SCIENCE 7.PS1.1 Flashcards | StudBud
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PHILLIPS SCIENCE 7.PS1.1
PHILLIPS SCIENCE 7.PS1.1
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1
Which of the following is not made up of atoms?
Molecules
Pure substances
Elements
Subatomic particles
2
What is the smallest particle of the element calcium that has all the particles of calcium?
An electron from a calcium atom.
A proton from a calcium atom.
An atom of calcium.
A molecule that contains calcium.
3
This table shows the charge for subatomic particles in an atom. Which charge completes the chart for electrons?
-1
+2
+1
-2
4
Which scientist added negativ ely charged particles to the model of the atom?
Niels Bohr
John Dalton
Ernest Rutherford
J.J. Thomson
5
What is the mass number of an atom with 6 protons, 1 neutron, and 7 electrons?
13
9
5
7
6
A wood chair and a balloon. What do these two objects always have in common?
Both are made of the same kind of atoms.
Both have the same mass number.
Both are made of atoms.
Both are made of the same kind of atom.
7
This image shows an incomplete model of an atom. Which particles belong inside the nucleus?
Protons and electrons
Elements
Protons and neutrons
Electrons
8
The mass number in an atom is
The number of protons and neutrons in the nucleus
All of these
The number of electrons minus the number of protons in the atom
The number of subatomic particles in the atom
9
What is the mass number of an atom with 4 protons, 5 neutrons, and 4 electrons?
1
9
4
13
10
Which is NOT accepted as true of current atomic theory?
Atoms are the basic unit of matter.
The nucleus has charged and uncharged particles.
Electrons move in a circular path around the nucleus.
Protons are smaller than the atom.
