Science Test Study Flashcards
Each of these is an example of matter EXCEPT _____.
a cloud
a dust particle
air
a beam of light
A beam of light
An atom of the element with atomic number 6 always has _______.
6 protons in its nucleus
The atomic number of an element tells the number of ________ in the nucleus of an atom of that element.
protons
Isotopes of an element contain different numbers of _______.
neutrons
Most elements found on the left side of the periodic table are ______.
metals
________ are small particles that make up most types of matter on Earth.
atoms
Which of the scientists below introduced the idea that matter is made up of tiny, individual bits called atoms?
Arrhenius
Avogadro
Democritus
Chadwick
Democritus
Which of the following scientists envisioned the atom as a ball of positive charge with electrons embedded in it, much like chocolate chips spread through cookie dough?
Crookes
Dalton
Rutherford
Thomson
Thomson
Which of the following are found close to the right side of the periodic table?
nonmetals
How is matter defined?
anything that has mass and occupies space
What does the atom consist of ? (Use picture from number 11-15)
electrons, protons, and neutrons
The particle that is labeled #3 on the diagram and has a positive charge in an atom is called ______. (Use picture from number 11-15)
proton
What particle is labeled #2 in the diagram? (Use picture from number 11-15)
neutron
What particle is labeled #1 in the diagram? (Use picture from number 11-15)
electron
In an atom, where is an electron located? (Use picture from number 11-15)
in a cloud-like formation surrounding the nucleus
The periodic table block shown above lists properties of the element chlorine. What does the number 35.453 mean? (Use picture from number 16-18)
the average number of neutrons and protons in a chlorine atom
According to the periodic table block, how many electrons does an uncharged atom of chlorine have? (Use picture from number 16-18)
17
According to the periodic table block, how many neutrons does an uncharged atom of chlorine have? (Use picture from number 16-18)
18
Using the figure above, krypton has _______. (Use picture from number 19-21)
an atomic number of 84
an atomic number of 36
an atomic mass of 36
an at
an atomic number of 36
From the figure above, the element krypton is _______. (Use picture from number 19-21)
a solid
a liquid
a gas
a mixture
a gas
Using the figure above, the atomic mass of krypton is _______. (Use picture from number 19-21)
84
In the modern periodic table, elements are arranged by _____.
atomic number
The first letter of a chemical symbol is always _____.
a capital letter
A metal can be hammered into different shapes because it is _______.
malleable
Who created the first periodic table of elements?
Dmitri Mendeleev
