different they are made from different things
all physical changes are alike in which all of them changing without changing in chemical makeup of the matter we have
Because no two elements are exactly alike. For instance, gold and silver may both be in the transition metal group and have similar properties like rust resistance and conductivity, but they have different melting points (gold 1356 kelvin, silver 1241 kelvin) for instance.
The isotopes of an element are alike in that they have the same number of protons, electrons, and the same chemical properties. The isotopes are different in that they have different numbers of neutrons and thus different atomic masses.
Two or more atoms that are alike or different are called molecules.
The physical and chemical changes that occur in a system are alike because they change the state of the reactants. They are different because a chemical change produces a new substance while a physical change does not produce any new substance.Differ in physical:1. A difference in the appearance, smell, or simple display of a sample of matter without a change in composition.2. Be observed without changing the identity of the substance3. Can be seen or measured without changing a material.Differ in Chemical:1. There is a change of the substances in question2. determines how a substance changes into a completely different substance.3. Tells how the substance forms new substances when it mixes with something else.
group is more alike
False. Properties within a group are more alike than properties within a period.
false
No, the physical properties within a group are more alike than those of a period. This is because all elements in a group share the number of valence electrons.
how are physical weathering and chenical weathering alike and different
how are physical weathering and chenical weathering alike and different
how are physical weathering and chenical weathering alike and different
Isotopes are exactly same with respect to all the chemical properties but they differ with respect to physical properties.
They are both using words to describe someone or something.
They have all the chemical, physical, nuclear properties identical. This is not the case for isotopes.
Physical properties are those that can be observed without changing the identity of the substance. The general properties of matter such as color, density, hardness, are examples of physical properties. Properties that describe how a substance changes into a completely different substance are called chemical properties. Flammability and corrosion/oxidation resistance are examples of chemical properties.
The elements in a given family (or group) will have the same number of valence electrons and hence will have similar chemical and physical properties.