Test flash cards
Which of the following is not a metal? H, Al, B, Re
B
___ is th first element at the top of the stair step.
Boron
Determine which atom is being described here: shiny, has the properties of both metals and no metals, and has three valence electrons. J
Boron (B)
Which two elements are in the same Period
Boron and Carbon
The physical property ____ describes when a material breaks or shatters easily.
Brittle
What do we call an object that shatters when struck by a hammer?
Brittle
The simplest substance out of these is? Carbon, born, an element
An element
What do elements in the same period have in common?
Energy level
True or false? Neutrons have a negative charge.
False
True or false? One property of nonmetals are that they are good conductors of electricity
False
Sodium (Na) is a highly reactive element. Which characteristics of sodium is responsible for its reactivity.
It has one valance electron
Metals are found on the ____ side of the periodic table
Left
The way a metals surface reflects light is called ___
Luster
What physical properties are used to describe nonmetals, metals, and metalliods?
Luster, conductivity, malleability
When an object changes shape when struck by a hammer, it is called?
Malleable
Which of the following IS a property of metals? Brittle, malleable, dull, insulator.
Malleable
____ refers to the way a metal can be hammered or rolled into thin sheets
Malleable
How do you get the number of neutrons in an atom
atomic mass - atomic number
Do groups go across or down?
down
Which subatomic particle has a negative charge?
electron
What do we call columns on the periodic table
groups
Which subatomic particle has a positive charge?
proton
The periodic table has ___ groups
18
The periodic table has ___ periods
18
How many electrons does oxygen need to be stable
2
What is the number of protons in an atom if the atomic number is 7
7
How many electrons do atoms need to be stable
8
There are __ elements on the on the periodic table that are classified as metals
88
When a material allows electricity to heat or flow easily through it, it is said to be a good _____
Conductor
Luster, hard, malleable, and dull are all elements of an atom except?
Dull
Which of the following is NOT a characteristic of most metals? ductile, Malleable, good conductor, dull
Dull
Which subatomic particle is located outside the nucleus
Electron
What do we call columns on the periodic table
Groups
An _____ does not allow electricity or heat to flow through it easily
Insulator
This group of elements sit along a zigzag line on th periodic table and have properties of both metals and nonmetals
Metalliod
Which group of elements could have the characteristics of luster (shiny) nonmetals, metalliods, metals, metalliods/metals.
Metalliods/metals
What is a good conductor of heat
Metals
Which subatomic particle has no charge
Neutron
Which group of the periodic table is composed of inert (not reactive) gases
Noble gases
I have an object that is dull, brittle, and an insulator. What is it?
Nonmetal
This group of elements has properties that are opposite those of metals
Nonmetals
The central region where it's neutrons and protons are located.
Nucleus
Rows on the period table are called _____ while columns are called _____
Periods, groups
____ are things you can observe and describe about matter
Physical properties
Which subatomic particle identifies the element
Proton
Name the subatomic particles inside the nucleus
Proton or neutron
The atomic number of an element is the total number of which particles in the nucleus? Electrons, protons, neutrons, or valence electrons.
Protons
The positive particles of an atom
Protons
Most metals are ____ at room temperature
Solid
List 5 physical properties of all matter
Texture, color, odor, density, luster
An atom has 18 protons and 8 valence electrons. Which statement would best identify this element?
The element is "happy" or stable because it outer energy level is filled.
Describe What luster means.
The way an object reflects light
True or false? Some characteristics of metals is that they are malleable and ductile.
True
Do periods go across or down?
across
Copper
metal
Gold
metal
Silver
metal
Sodium
metal
Arsenic
metalloid
Silicon
metalloid
Chlorine
nonmetal
Helium
nonmetal
Oxygen
nonmetal
What do we call rows on the periodic table?
periods
