STARR Review Questions V Question Preview (ID: 37056)


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Flourine, Chlorine, Bromine and Iodine are all found in the same group. These elements are group together because
a) they are noble gases
b) they have the same atomic mass
c) the are metals
d) the react in similar ways

An atom has 24 protons, 28 neutrons and 24 electrons. What's the charge of the nucleus?
a) positive 24
b) negative 24
c) positive 28
d) negative 28

Which explains why Noble gases do not react with other elements?
a) Noble gases are in the same period
b) noble gases are stable because their valence electrons are incomplete
c) noble gases physical properties are different than other elements
d) noble gases are stable because their valence shells are complete

Flourine is in group 17 and has an atomic number of 9. How may valence electrons does it have?
a) 17
b) 9
c) 7
d) 2

Element in group 2 of the periodic table has how many valence electrons?
a) 4
b) 2
c) 3
d) 1

Group number determines..
a) number of circles
b) valence
c) protons
d) neutrons

Identity of the element determined by
a) electrons
b) atomic number
c) neutrons
d) mass number

Charge of the nucleus
a) negative
b) no charge
c) positive
d) negative cloud

atomic mass is determined by
a) mass number minus protons
b) protons plus electrons
c) electrons minus mass number
d) protons plus neutrons

Madeline spilled hydrochloric acid on the lab table. She sprinles baking soda on the spill to help clean up the spill. Which evidence of a chemical change did she observe?
a) hydrochloric acid evaporated, leaving only the baking soda
b) baking soda and hydrochloric acid combined and formed bubbles
c) baking soda absorbed the hydrochloric acid
d) baking soda dissolved in the hydrochloric acid

Which of the following best describes a change in iron caused by a chemical reaction?
a) iron left outside will turn an rusty orange color
b) iron nail rubbed with a magnet attracts iron powder
c) iron wire attached to a battery becomes hot
d) iron nail looks shiny and silvery

Which information on the periodic table gives you the number of protons of the element?
a) atomic mass
b) symbol
c) name
d) atomic number

Which of the following best describes an electron?
a) has no charge and less than a neutron
b) negative charge and same mass as a proton
c) no charge and less mass than a proton
d) negative charge and little to no mass

Which group of elements are most reactive?
a) elements with 1 valence
b) elements with 3 valence
c) elements with 6 valence
d) elements with 8 valence

An atom has 10 protons and atomic mass of 20. How many electrons
a) 10
b) 20
c) 30
d) 200

An atom has 10 protons and atomic mass of 20. How many neutrons?
a) 10
b) 20
c) 30
d) 200

An atom has 3 protons and 4 neutrons. How many electrons?
a) 12
b) 7
c) 3
d) 1

An atom has 3 protons and 4 neutrons. What's the mass number?
a) 1
b) 3
c) 7
d) 12

An atom has 5 electrons and 6 neutrons. What's the atomic number?
a) 1
b) 5
c) 6
d) 11

An atom has 5 electrons and 6 neutrons. What's the atomic mass?
a) 1
b) 5
c) 6
d) 11

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