Question 1

Which experiment led to the discovery of the nucleus in the atom?

Accepted Answer

Rutherford's Gold Foil experiment

Question 2

Which subatomic particle gives an element its chemical identity?

Accepted Answer

Proton

Question 3

According to Coulomb's Law, what happens to the force of attraction between two charged particles if the distance between them doubles?

Accepted Answer

The force becomes one-fourth as strong

Question 4

Which of the following is a compound?

Accepted Answer

CO

Question 5

What is the charge of an electron as determined by Millikan's Oil Drop experiment?

Accepted Answer

$$-1.60 	imes 10$$^{-19}$$ C

Question 6

Which group on the periodic table is known as the 'alkali metals'?

Accepted Answer

Group 1A

Question 7

If an atom of $$^{65}_{29}Cu$$ loses two electrons, what is its resulting charge?

Accepted Answer

$$+2$$

Question 8

Which statement best describes an isotope?

Accepted Answer

Atoms of the same element with different numbers of neutrons

Question 9

Which of the following is NOT matter?

Accepted Answer

Reflection in a mirror

Question 10

Which trend is observed as you move from left to right across a period in the periodic table?

Accepted Answer

Electronegativity increases

Question 11

What is the main difference between an element and a compound?

Accepted Answer

Elements contain only one type of atom, compounds contain two or more types of atoms chemically bonded

Question 12

Which scientist is credited with the Law of Definite Proportions?

Accepted Answer

Joseph Proust

Question 13

Which subatomic particle was discovered using the cathode ray tube?

Accepted Answer

Electron

Question 14

Which of the following is a visualization that can be used to approximate the size and shape of atomic particles?

Accepted Answer

Bohr model

Question 15

What is the formula for Coulomb's Law?

Accepted Answer

$$F = k \frac{q_1$ q_2$}{r^2$}$$

Question 16

Which of the following is NOT a subatomic particle?

Accepted Answer

Photon

Question 17

Which element is a liquid at room temperature?

Accepted Answer

Mercury

Question 18

Which of the following is NOT a compound?

Accepted Answer

Cr

Question 19

What is the name of Group 7A on the periodic table?

Accepted Answer

Halogens

Question 20

Which of the following statements about valence electrons is TRUE?

Accepted Answer

Valence electrons determine the chemical reactivity of an element

Foundations of Chemistry: Matter, Atoms, and the Periodic Table

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