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IW14 - Do first.

Posljednje ažuriranje over 5 years ago

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Pitanje 1

1.

Today, you will learn about elements and compounds. By looking at the diagram, what do you observe about elements and what do you observe about compounds?
Word bank: element same type atoms compounds different

Sentence Starter: By looking at the diagram, I noticed that elements have.... Another observation that I see is that compounds

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Pitanje 7

7.

Based on the paragraph 2 sentence 2, elements can be divided into smaller substances

Tačno

Netačno

Pitanje 8

8.

Based on paragraph 2 sentence 3, elements are made of...

only one kind of atom

more than one kind of atom

Pitanje 9

9.

According to paragraph 3, How many elements are found naturally in rocks, soil, air, etc ? How many elements can only be made in labs by humans ?

92; 118

92; 26

117; 8

86; 29

Pitanje 11

11.

Scientists use the elements symbols like H instead of the elements name hydrogen. Why is this?

Because it is easier to represent what elements and compounds look like using smaller symbols

Because it is all about fluidity and concentration of bicep

Pitanje 13

13.

A compound is molecule where 2 or more ________ elements have combined.

similar

different

exact

Pitanje 15

15.

What does a molecule have

2 or more

nothing

it is empty

Pitanje 16

16.

A molcule of an element has two or more of the same elements combined, while a molecule of a compound has..

has two or more different elements combined

multiple energy levels.

an infinity of elements

has three or more of the same elements combined