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Is this statement true or false The isotope hydrogen-1 is the standard used for the relative scale of atomic masses?
True. Hydrogen-1, also known as protium, is the standard used for the relative scale of atomic masses. Its mass is defined as exactly 1 atomic mass unit (amu) on the atomic mass scale.
True or false the mass of a proton is about one atomic mass unit?
False - an electron is about 1/1836 the mass of a proton.
Is this true or false the mass of a proton is about one atomic mass unit?
The mass of the proton is a little greater than 1 amu:
The weight of subtomic particles is measured in units called atomic mass units true or false?
Yes, true: the mass of 1 proton is exactly the same as of 1 neutron: 1 a.m.u.
True or false Tritium is an isotope of hydrogen with 2 neutron?
False. Tritium is an isotope of hydrogen with 2 neutrons.
Is this statement true or false The isotope hydrogen-1 is the standard used for the relative scale of atomic masses?
True. Hydrogen-1, also known as protium, is the standard used for the relative scale of atomic masses. Its mass is defined as exactly 1 atomic mass unit (amu) on the atomic mass scale.
Base weight a system of comparing atomic weights to carbon is it true or false?
True. The unit for the atomic weights of chemical elements is the relative atomic mass unit (1/12 from the atomic mass of the isotope 12C). Note that atomic weights is used for elements and atomic mass for isotopes.
True or false the mass of a proton is about one atomic mass unit?
False - an electron is about 1/1836 the mass of a proton.
True or false that hydrogen is the least common element in the universe?
False. Hydrogen is the most abundant element in the universe, constituting about 75% of its elemental mass.
The number of neutrons is equal to the atomic number true or false?
False as a generalization but true for some isotopes. The atomic number is the number of protons in a nucleus, which may coincidentally be the same as the number of neutrons but is not required to be.
Is the sun made mostly of hydrogen and helium true or false?
True. The Sun is mainly composed of hydrogen (about 74% of its mass) and helium (about 24% of its mass). The remaining 2% consists of trace amounts of heavier elements.
Is this true or false the mass of a proton is about one atomic mass unit?
The mass of the proton is a little greater than 1 amu:
The weight of subtomic particles is measured in units called atomic mass units true or false?
Yes, true: the mass of 1 proton is exactly the same as of 1 neutron: 1 a.m.u.
State true or false Hydrogen is insoluble in water?
False False False FalseFalse
Is it true or is it false Electronegativity increases continuously as atomic number increases?
False. Electronegativity does not increase continuously as atomic number increases. While there is a general trend of increasing electronegativity across a period from left to right on the periodic table, there are exceptions due to factors such as electron configuration and atomic structure.
Water H2O is composed of hydrogen and oxygen true or false?
True
Is it true that the mass of a proton is about one atomic mass unit?
no
