Atomic Structure Quiz — I Hate CBT's

1. All elements are composed of

Atoms (correct Answer)
compounds
neutrons
molecules

2. What is the mass number of carbon (C)?

12 (correct Answer)
6
13
C

3. How many electrons are in an atom of carbon (C)? (Remember APE! Atomic Number = # of Protons and # of Electrons)

6 (correct Answer)
13
12
C

4. How many electrons are in an atom of carbon (C)? (Remember APE! Atomic Number = # of Protons and # of Electrons)

6 (correct Answer)
12
13
C

5. How many neutrons are in an atom of sodium (Na)? (Remember M-A=N! Mass # – Atomic # = Neutrons)

12 (correct Answer)
6
13
C

6. What is the mass number of sodum (Na)? (Don’t forget to round!)

23 (correct Answer)
6
12
C

7. Atoms of the same element must always have the same number of _________

isotopes
neutrons
Protons (correct Answer)
electrons

8. The dense, positively charged mass located in the center of the atom.

Nucleus (correct Answer)
isotope
proton

9. The _________ of an element equals the number of protons in an atom of that element

atomic number(correct Answer)
isotopes
atomic weight

10. The __________ of an atom is the sum of the protons and neutrons in the nucleus of that atom.

atomic weight
isotope weight
atomic number
mass number(correct Answer)

11. Number of protons in an atom of an element.

atomic mass
isotopes
atomic number(correct Answer)
proton count

12. Where are electrons found in an atom?

in the atomic number
inside the nucleus
outside of the nucleus(correct Answer)
in the electron zone

13. Where are protons and neutrons found in an atom?

inside the nucleus(correct Answer)
in the electron zone
outside of the nucleus
in the atomic number

14. An element will always have the same number of ________.

protons(correct Answer)
atoms
isotopes
neutrons

15. What is the atomic number of gold (Au)?

79(correct Answer)
4
196
Au

16. How many protons does gold (Au) have? (Remember APE! Atomic Number = # of Protons and # of Electrons)

79(correct Answer)
4
196
Au

17. Which atomic particles will you find inside of the nucleus of an atom?

Electron & proton
Proton & Neutron(correct Answer)
Neutron & Electron

18. Which atomic particle has a negative charge?

Electron(correct Answer)
Proton
Neutron

atom

Answer: the smallest particle of an element that keeps its chemical properties

John Dalton

Answer: in the early 1800’s came up with his own atomic model that proposed that all matter is made up of individual particles called atoms which cannot be divided.

Dalton’s theory

Answer: 1. elements are composed of atoms

Answer: 2. atoms of the same element have the same mass (WRONG)

Answer: 3. compounds contain atoms of more than one element

Answer: 4. in a compound, atoms always combine in the same way

J.J. Thompson

Answer: conducted some experiments with electricity and matter. He discovered that electricity consisted of negatively charged particles.

electron

Answer: negatively charged particle

proton

Answer: positively charged particle

neutron

Answer: neutrally charged particle

Ernst Rutherford

Answer: discovered that the nucleus is positively charged because protons are in the nucleus. He did the gold foil experiment.

quarks

Answer: small particles that make up PROTONS and NEUTRONS, each proton/neutron has 3 each

up, down, top, bottom, strange, charm

Answer: types of quarks

Answer: a proton or neutron is made up of ___ quarks

mass #

Answer: equals sum of protons and neutrons in an atom, mass number – atomic number = # of neutrons, we get mass number by rounding the average atomic mass

atomic #

Answer: the number of protons in an atom, atom is identified as an element by the number of protons in the nucleus

atomic mass unit

Answer: amu, base on the mass of one carbon atom that has 6 protons and 6 neutrons, 1 amu = 1/12 mass of a carbon atom

1/12

Answer: amu is ___ of a carbon atom

mass of protons + mass of neutrons

Answer: mass of an atom

isotopes

Answer: atoms with the same number of protons but different number of neutrons