Home Library Explore SAT

Home Library Explore SAT

Atoms & Elements Review Flashcards | StudBud

Explore/Atoms & Elements Review

Atoms & Elements Review

10 terms·StudBud Administration·1,004 plays

Review for unit test: Atoms & Periodic Table.

Flashcards10 cardsFPractice quizPHost liveL

Questions 10

Answers

1
Which is a compound?
oxygen (O)
carbon dioxide (CO)
arsenic (As)
helium (He)
2
Most of the periodic table is made of what type of elements?
metals
metalloids
lanthanides
non-metals
3
Which group of elements do not react because they have full outer orbitals of electrons?
metalloids
alkali metals
noble gases
halogens
4
Looking at the periodic table, which elements come from the same GROUP?
Lithium (Li) & Beryllium (Be)
Oxygen (O) & Sulfur (S)
Beryllium (Be) & Bromin (Br)
Hyrdogen (H) & Boron (B)
5
CHALLENGE: If these 4 elements are in the same period, which has the greatest atomic number?
B
C
D
A
6
Which of these statements about a column of the periodic table is true?
The elements have the same density.
The elements have the same atomic mass.
The elements have similar chemical properties.
The elements have the same atomic number.
7
Looking at the periodic table, which elements come from the same PERIOD?
Oxygen (O) & Sulfur (S)
Lithium (Li) & Beryllium (Be)
Hydrogen (H) & Boron (B)
Beryllium (Be) & Bromine (Br)
8
What is an element?
substance that CANNOT be broken down chemically
a collection of atoms
a substance that results from any chemical change
the basic unit of matter
9
Dmitri Mendeleev invented the periodic table after discovering the remaining missing elements.
True! He built the table as we know it today.
False! He designed a table with blanks for unknown ones.
True! He found ten elements in his life!
False! He found elements, but didn't finish the table.
10
The number of protons in an atom is equal to the ________________ of the atom.
positive charges
electrons
atomic number
all of these