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- 1. Multiple Choice
Which two particles contribute more to the mass of an atom? (select 2)
Protons
Neutrons
Electrons
Nucleus
- 2. Multiple ChoiceWhat is at the center of every atom?An electronA compoundA moleculeA nucleus
- 3. Multiple Choice
The positively charged particles of an atom are the ________.electronsprotonsneutronsprotons & neutrons - 4. Multiple ChoiceWhat does the nucleus of an atom contain?Electrons and neutronsProtons and neutronsNeutrinos and positronsDNA and RN
- 5. Multiple Choice
What happens if an atom has more electrons than protons
It will have a positive charge
It will have a negative charge
It will be neutral
Number of electrons and number of protons always are the same
- 6. Multiple Choice
How do we call the atoms that have different number of electrons and protons?
Isotopes
Ions
Neutral
Leptons
- 7. Multiple Choice
This atom has more electrons than protons
True
False
- 8. Multiple Choice
Atoms are made up of ________________
energy
electrons
subatomic particles
gasses
- 9. Multiple Choice
__________ are negatively charged particles that are in the orbitals around the nucleus.
protons
nucleus
neutrons
electrons
- 10. Multiple Choice
A proton has a ___________ charge.
positive
negative
neutral
massive.
- 11. Multiple Choice
A neutron has _________ charge or is ________.
negative ... neutral
positive .... neutral
no .... negative
no ... neutral
- 12. Multiple ChoiceWhich is an electron?ABC
- 13. Multiple Choice
How many atoms of Hydrogen are in H2O
1
2
3
more than 3
- 14. Multiple Choice
What is the chemical symbol for Hydrogen
H
He
Hy
Hg
- 15. Multiple Choice
The atomic mass is the
number of protons and neutrons inside the nucleus
number or electrons or protons
number of protons, neutrons and electrons
- 16. Multiple Choice
If a neutral atom has 3 electrons, how many protons does it have?
1243 - 17. Multiple ChoiceWhat is the mass of an atom if it has 11 protons, 12 neutrons, and 11 electrons?22113423
- 18. Multiple ChoiceIf an atom has 10 protons, 10 neutrons, and 10 electrons, what is the mass of the atom?102030
- 19. Multiple ChoiceIf an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?12 neutrons12 electrons12 protons24 protons and neutrons
- 20. Multiple ChoiceWhat particle uniquely identifies an element?Number of Valence ElectronsNumber of ProtonsNumber of ElectronsAtomic Mass
- 21. Multiple ChoiceHow many neutron are in the atom "K"?723920
- 22. Multiple ChoiceWhat is the number of protons that the element in this image contain?1471518
- 23. Multiple ChoiceBeryllium has how many protons?49.0122213.0122
- 24. Multiple ChoiceIn the modern periodic table elements are arranged by:atomic massatomic numbervalence electronsnumber of isotopes
- 25. Multiple ChoiceTrue or False? Neutrons have a negative chargeTrueFalse
- Answer choicesTagsAnswer choicesTags