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- Multiple ChoicePlease save your changes before editing any questions.
Because phosphorous is an element it contains
two different atoms chemically combined
a mixture of many atoms
one single type of atom
one type of compound
- Multiple ChoicePlease save your changes before editing any questions.
Leaves changing colors in the fall is an example of this type of change
chemical
physical
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Particle motion increases in this order when energy is added to matter
liquid, solid, plasma, gas
plasma, gas, liquid, solid
solid, liquid, gas, plasma
- Multiple ChoicePlease save your changes before editing any questions.
Nonmetals are located in this section of the periodic table:
middle section
stair step section on the right side
right side
left and middle section
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Moving across and down the periodic table, subatomic particles (protons, neutrons, electrons)
increase
decrease
stay the same
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Group/column numbers can be used to determine the number of
protons
electrons
valence electrons
neutrons
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The number of energy shells for an element's atom can be determined by the
group number
atomic number
period/row
atomic mass
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Aluminum has a mass of 27 and atomic number of 13. How many neutrons does it have?
14
13
27
26
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This type of matter contains at least two different types of elements that can only be separated chemically
compound
element
mixture
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Which two elements have the same number of valence electrons?
He and Mg
B and C
Li and O
Be and Ca
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According the Law of Conservation of Mass, after a chemical reaction,
atoms in the product will be greater than the atoms in reactant
atoms in the reactant will be less than the atoms in the product
atoms in the product will be less than the atoms in the reactant
atoms in the product will equal the atoms in the reactant
- Multiple ChoicePlease save your changes before editing any questions.
The product in this equation is:
6CO2 + 6H2O -------> C6H12O6 + 6O2
6CO2 + 6H2O
C6H12O6 + 6O2
C6H12O6
6CO2
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6CO2 + 6H2O -------> C6H12O6 + 6O2
How many element types are included in this equation?
3
5
8
4
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During a chemical reaction, mass cannot be created nor destroyed - This is the
Law of Conservation of Energy
Law of Conservation of Elements
Law of Conservation of Motion
Law of Conservation of Mass
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With the exception of Hg (mercury), the metal elements are this state of matter at room temperature
solid
liquid
plasma
gas
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The phase change from liquid to solid is
sublimation
freezing
condensation
evaporation
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In which state of matter do particles vibrate with the least amount of energy
liquid
plasma
gas
solid
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All of these are examples of matter except
frost on the window
light from a flashlight
air
dust
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Look at the picture and choose the identity of the types of matter in the correct order with the picture
mixture, compound, element
compound, element, mixture
mixture, element, compound
element, compound, mixture
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Choose the correct choice
protons = electrons
protons = neutrons
electrons = neutrons
protons = isotopes
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Be, Mg, Ca, and Sr are all members of this family
Halogens (Group 17)
Noble Gases (Group 18)
Alkali Metals (Group 1)
Earth Metals (Group 2)
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Choose the correct statement of subatomic charges
neutron (0) electron (+) proton (-)
neutron (+) electron (-) proton (0)
neutron (-) electron (0) proton (+)
neutron (0) electron (-) proton (+)
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Which subatomic particles orbit the nucleus?
electrons
neutrons
protons
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Which subatomic particles make up the nucleus of an atom?
protons and electrons
neutrons and electrons
protons and neutrons
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Which element has 15 protons and 15 electrons and 16 neutrons?
nitrogen
phosphorus
sulfur
silicon