Atomic number weight periodic chart reading fill in the blanks 23

74. exercise

soon

chemistry

history

possible

alchemists

pure

To learn the speech of alchemy, an early form of chemistry in which people attempted to turn metals into gold, it helps to think back to a time when there was no science: no atomic number or weight, no periodic chart, no list of elements. To the …………………….. the universe was not made of leptons, bosons, gluons, and quarks. Instead it was made of substances, and one substance say, walnut oil-cloud be just as ………………. as another say, silver-even though modern ……………………… would say one is heterogeneous and the other homogeneous. Without knowledge of atomic structures – how would it be ……………………. to tell elements from compounds?

---

Amazon basin diversity on earth reading fill in the blanks 22

German French and Japanese reading fill in the blanks 21

Ricky ponting daily read aloud practice exercise 33

PTE Listening practice test 2 full listening practice

Highlight correct summary PTE listening module practice 1

Like Our Facebook Page

Follow us on twitter link

Atomic number weight periodic chart reading fill in the blanks 23

Atomic number weight periodic chart reading fill in the blanks number weight periodic chart reading fill in the blanks 23