Which one of the following statements about elements is correct? Elements consists of one type of atoms.Two compounds can form elements.All the elements consist of different type of atoms.All the above

Which of the following statements is true regarding molecules and compounds?Multiple choice question.Molecules always consist of less than 24 atoms, and compounds always consist of 24 or more atoms.Molecules consist of just one element, and compounds are composed of different kinds of elements.Molecules and compounds are both made of atoms.

Select the incorrect statement about Dalton’s theory of the atom.A.All elements are composed of atoms.B.Atoms are indivisible and indestructible.C.Compounds contain atoms of more than one element.D.Atoms of all the elements have same number of protons, electrons and neutrons

Which of the following is true about compounds?1 pointthey can be physically separated into their component elementsthey have compositions that varythey have properties to those of their component elementsthey are substances made of two or more elements bonded together

Identify whether the following statement is true or false. Most of the substances within and around us are made up of more than one type of atom.

Which of the following statements is not correct?A mixture consists of two or more elements or compounds not chemically combined togetherA compound contains two or more elements chemically combined in fixed proportionsAn element is a substance that is made from only one type of atomA pure substance is made up of a single element or compound mixed with water2Which of the following is not a pure substance?AirEthanolSodium chlorideWater3Which of the following describes a pure substance?Melts at specific and fixed temperature, boils over a range of temperaturesMelts and boils over a range of temperaturesBoils at specific and fixed temperature, melts over a range of temperaturesMelts and boils at specific and fixed temperatures