I kind of get the idea of it but help out plz. Which statements describe elements? Elements can be separated using physical means. Elements are made of atoms with the same atomic number. Elements cannot be separated using ordinary chemical means. Elements may be represented by chemical symbols. Elements are made of two or more different types of atoms.

One of the brightest comets of the 20th century was comet hyakutake, which passed close to the sun in early 1996. the orbital period of this comet is estimated to be about 30,000 years. find the semi-major axis of this comet’s orbit. compare it to the average sun-pluto distance and to the distance to alpha centauri, the nearest star to the sun, which is 4.3 light-years distant.

Compare the partition of southeast asia to the partition of africa how was it similar

Concealer circle oh in which arc xy measures 16 pi centimeters the length of the radius of the circle is 32 cm what is the circumference of the circle