Chemistry test #1

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if an atoms of barium gains 2 neutrons, what would be its new mass

139

how many negative subatomic particles travel around the nucleus in potassium (electrons)

19

how many positive subatomic particles are in the nucleus of potassium(protons)

19

How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?

36

what is the mass number of phosphorus if it were to gain 5 neutrons

36

what is the mass number of Zn-62

62

Manganese (III) combines with Chlorine. What is the product?

MnCl3

what is the ion formula for Zn if it loses 2 electrons

Zn +2

what is the name of Zn-62 if it gain 4 neutrons

Zn-66

What would phosphorous do with its valence electrons?

gain more

is the barium of 2e an isotope or an ion of barium

ion

Anything that has mass and takes up space is called

matter

An atom becomes _________ when it gains electrons.

negative

an atoms overall charge is

neutral

Particles in an atom that are neutral and have no charge are ______.

neutrons

What quantities vary between isotopes of an element?

neutrons and atomic mass

is phosphorus a metal, non-metal, or metalloid

non-metal

The central region of an atom where its neutrons and protons are is its _______.

nucleus

what uniquely identifies an element

number of protons

76 protons and 114 neutrons

osmium-190

an atom is electrically neutral when

protns and electrons are the same

the positive particles of an atom are

protons

A +2 ion will

subtract 2 electrons

Positive ions will try to achieve the configuration of

the noble gas behind itself

where are electrons of an atom found

electron cloud

what is the charge of a sodium ion

+1

if an element has 3 valence electrons, what charge will likely form on its ion

+3

what is the charge of an ion with 21 protons, 25 neutrons, and 28 electrons

+3

Group 7A always has ions with a charge of

-1

how many neutral subatomic particles are in the nucleus of potassium(neutrons)

20

Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic mass of lead is 207.2. Which isotope of lead is likely to be the most abundant.

207

Nickel-59 has how many neutrons?

31

how many neutrons are in Zn-62

32

how many neutrons does the isotope 89 Kr have 36

53

An atom with atomic number 6 would have how many protons?

6

Aluminum combines with Oxygen. What is the product?

Al2O3

what is the only metalloid of Group 3A

B-boron

if an atom of barium loses 2 neutrons, what would be its isotope name

Ba-135

Calcium combines with Iodine. What is the product?

CaI2

Which element is the lightest halogen

F-fluorine

which metal is the heaviest alkali metal

Fr-francium

which element is a nonmetal but in the metal area of the table

H-hydrogen

which element is the last transition metal of period 6

Hg-mercury

which transition metal is a liquid at room temperature

Hg-mercury

which element is the last actinide

Lr-lawrencium

Which statement best describes an electron?

Smaller mass than a proton and a negative charge

Why are ions formed?

So the atom can achieve a stable state (usually an octet)

which element is an alkali earth metal of period 5

Sr-strontium

What is its name if zinc gains 3 protons

arsenic

Ions are:

atoms with a positive or negative charge

what is the name of the barium after losing 2 electrons

barium ion

Elements on the LEFT side of the periodic table will most likely form:

cations

Which of the following is a negatively charged subatomic particle?

electron

What happens when two oppositely charged ions are pushed together?

they attract

What happens when two negatively charged ions are pushed together?

they will repel


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