Font size
Worksheets8.5(A), 8.5(B), and 8.5(C) Standards Review
Total questions: 12
Worksheet time: 7mins
What are the negatively charged particles in an atom called?
protons
neutrons
nuclei
electrons
How would you describe the nucleus of an atom?
dense, positively charged
large, positively charged
tiny, negatively charged
dense, negatively charged
At the atomic level, what makes elements reactive?
having a filled outer level
exchanging or sharing valence electrons
having the same number of electrons
having the same number of protons
Look at the column, taken from the periodic table. Which of the following statements is correct for the elements shown?
Lithium has 6.9 protons.
Lithium has the least number of protons.
Sodium has the most number of protons.
Potassium has 39.1 protons.
An atom has 12 protons, 14 neutrons, and 12 electrons. What is the atomic number of this element?
24
26
12
38
Which of the following is true of properties of the elements in the same period of the periodic table?
They are similar.
They are not similar.
They are identical.
They have the same atomic mass.
The element sulfur (S) has an atomic number of 16, an atomic mass of 32.1, and is on the right side of the zigzag on the periodic table. Based on this information, to which class of elements does sulfur most likely belong?
metals
nonmetals
metalloids
solids
What is a vertical column of the periodic table called?
group
period
energy level
atomic number
The picture shows part of the periodic table. Which pair of elements are in the same period?
La and Ru
Ra and Sg
Y and Os
K and Mg
In general, elements in Group 18 (8A) do not form compounds. Which of the following explains why elements in Group 18 (8A) do not readily form compounds?
These elements are very reactive.
These elements have a full outermost energy level.
These elements are within the same period.
These elements have the same atomic number.
Which subatomic particles are found in the nucleus? Select two correct answers.
Electrons
Neutrons
Protons
Valence electrons
Which of the following best describes a proton? Select two correct answers.
It has a negative charge and about the same mass as an electron.
It has a negative charge and about the same mass as a neutron.
It has a positive charge and about the same mass as a neutron.
It has a positive charge and is located outside the nucleus.
It has a positive charge and is located inside the nucleus.
