invisible, negatively charged particle located in a cloud like formation that surrounds the nucleus of an atom

two or more atoms of the same element that have different numbers of neutrons in their nuclei

states that matter is not created or destroyed but only changes form

sum of the number of protons and neutrons in the nucleus of an atom

anything that takes up space and has mass

element that is malleable, ductile, a good conductor of electricity, and generally has a shiny or metallic luster

element that has characteristics of both metals and nonmetals and is a solid at room temperature

an uncharged particle located in the nucleus of an atom

elements that are usually gases or brittle solids and poor conductors of electricity and heat; are the basis of the chemicals life

positively charged particle located in the nucleus of an atom and that is counted to identify the atomic number

How do you calculate the number of neutrons of an element?

Period -

Elements that occur in vertical columns on the periodic table.

What is the name of Group 1?

Metalloids are

Which property do all metals on the periodic table share?

Which example illustrates the ductility of a metal?

The periodic table is arranged by _____________________________, which is the number of protons in the nucleus of an atom of each element.

Elements in the same ________________ have similar properties, which means they react with other elements in similar ways.

As you read from left to right across the periodic table, atomic number ____________________ by one for each element.

Most of the elements on the periodic table are ________________, which are shiny and conduct thermal energy and electricity.

___________________ is the ability of a metal to reflect light.

________________ is the ability of a substance to be hammered or rolled into sheets.

Except for mercury, all metals are ________________ at room temperature.

Elements in groups _________________ of the periodic table are the transition elements (metals).

As you go from ____________________________ across the periodic table, metallic properties of the elements tend to increase.

A nonmetal is an element that has no __________________ properties.

Many nonmetals are ______________ at room temperature.

Nonmetals are ____________ conductors, therefore, they are good insulators.

The most common element in the universe is ____________________.

The metalloids are elements that have physical and chemical properties of _____________ and _______________.

A(n) _______________________ cannot be broken down into any other substance.

Fe is the ___________________ for iron

All atoms are made of __________________.

Which subatomic particle has a negative charge?

Which subatomic particle is located outside the nucleus?

Which subatomic particle is located inside the nucleus?

Which subatomic particle has a positive charge?

Which subatomic particle has no charge?

It is the number of ________________ that distinguish one element from another.

This type of element makes up most (75%) of the periodic table.

Characteristics of metals are....

Characteristics of metals are....

_________________________ are the horizontal rows on the periodic table.

_________________________ are the vertical columns on the periodic table.

The number of protons and number of electrons is an elements _________________.

Radioactive isotopes that can be followed through the steps of a chemical reaction or industrial process are called

Alpha and beta decay are almost always accompanied by

Mark the statement about radioactive decay that is NOT true

In relation to the original atom, the atom that results from beta decay has an atomic number that is

The most penetrating type of nuclear radiation is the

The half life of Cobalt-60 is 5.26 years. After 10.52 years 5 grams of a 20 gram sample will remain

During radioactive decay the identity of an atom remains the same.

These particles move very fast, and can be blocked by a sheet of paper. They can cause injury to a person like a bad burn.

These particles are super fast and more penetrating. They can be blocked by an aluminum sheet. If they are not blocked beta particles can travel right through the human body and cause damage.

The most penetrating of all particles. You would need a thick lead sheet to stop these rays. They can travel through the human body, deliver intense energy to cells and cause severe damage,

_ reactions involve the protons and neutrons in the nucleus of an atom.

Which of the following is NOT a property of most nonmetals?

The only nonmetal in Group 14 is

Two of the same atoms bonded together is called a(n)

The highly reactive nonmetals of Group 17 are called the

Atoms of nonmetals usually _____________ electrons when they combine with other atoms.

When 2 or more atoms bond by sharing electrons, they form a(n)____________________.

The elements that have some properties of metals and some properties of nonmetals are called

________________ has chemical properties so different from those of the other elements that it cannot be placed in any group

Substances that can carry electric current under some conditions but not under others are called

The Group 15 element ____________ is used to make compounds known as fertilizers

Gold, which is in Group 11 on the periodic table, is an example of a(n) ____________________ metal.

The family in the periodic table that contains the most reactive metals is the ___________________ metals.

_________________ are devices that move atomic nuclei at extremely high speeds.

Elements with atomic numbers above 95 are called ________________ elements.

Thermal conductivity is the ability of an element to transfer ______________________.

Reactivity is a(n) ___________________ property of metals.

Mendeleev arranged his periodic table in order of increasing atomic _

Moving across the periodic table from left to right, one finds, in order, metals, then _, then nonmetals.

Another name for a _ is a family.

On the periodic table elements in the same _ have similar properties.

An element's _________________ can be predicted from its location on the periodic table.

The average mass of all the isotopes of an element is called the ____________________ .

The modern periodic table is arranged in order of increasing ______________________ .

Information found on the periodic table for each element includes its atomic number, _______________________ , name, and atomic mass.

An element with atomic number 10 is located to the ____________________ of an element with atomic number 9.

This helps scientists explain ideas about the natural world

The positively charged particle of an atom is called a(n)