Particle Patrol
These are the positively charged particles fouond in the nucleus.
What are protons?
This familiar force acts between all objects, but is
very weak within atoms because the masses are so
small.
What is gravity?
The number of these particles determines the atomic number of an element.
What are protons?
Isotopes are atoms that have the same number of protons but different numbers of these.
What is neutrons?
This is the small, dense, positively charged center of the atom.
What is the nucleus?
This particle has no electric charge and is located in
the center of the atom.
What is a neutron?
This force causes particles with the same charge to repel and opposite charges to attract.
What is the electromagnetic force?
This number is the sum of the protons and neutrons in an atom.
What is mass number?
An unstable isotope whose nucleus can change its composition is described as this.
What is radioactive?
jAn atom with equal numbers of protons and electrons has this overall charge.
What is neutral (or zero/no change)?
These negatively charged particles are found in
clouds outside the nucleus.
What are electrons?
This powerful force overcomes the repulsion of protons to hold the nucleus together.
What is the strong force?
If a carbon atom has 6 protons, you subtract the atomic from this.
What is 6?
This is how you would write the name of a carbon isotope with a mass number of 14.
What is Carbon- 14?
If an atom gains or loses electrons and becomes charged, it is called this.
What is an ion?
This is the unit scientists use to express the tiny mass of particles in atoms.
What is the atomic mass?
This force plays a key role in unstable atoms, allowing a neutron to change into a proton and an electron.
What is a weak force?
To calculate the number of neutrons, you subtract the atomic number from this.
What is the mass number?
Hydrogen-2 has one proton and one neutron. Its mass number is this.
What is 2?
This common object contains about 20, 000, 000, 000, 000, 000, 000, 000 atoms of copper.
What is a penny?
Compared to protons an neutrons, the mass of this particle is usually considered to be zero.
What is an electron?
Because of the electromagnetic force, these negatively charged particles are kept around the nucleus.
What are electrons?
This value is a weighted average of the masses of all naturally occurring isotopes of an element.
What is atomic mass?
Despite having different masses, isotopes of the same element generally share the same chemical and physical______.
What are properties?
Of the three main subatomic particles, this one is the most massive (though only slightly more than a proton.
What is a neutron?