Chem Vocab

Question 0

Molecule

Answer 0

Smallest particle of a compound

Question 1

Atom

Answer 1

Smallest particle of an element. Neutral charge.

Question 2

Compound

Answer 2

Made up of 2 or more atoms.

Question 3

Molecules have what type of charge?

Answer 3

No charge. Molecules are neutral.

Question 4

Ion

Answer 4

Ions have a positive or negative charge.

Question 5

What is the difference between mass and weight?

Answer 5

Mass is universal. It never changes no matter where you go.

Weight is gravity dependent. It can change depending on where you are.

Question 6

What do mass and weight both tell you?

Answer 6

The amount of matter in something

Question 7

Rows travel…

Answer 7

Horizontally. Thinks of “rows” in a theater and how they move horizontally

Question 9

What way do columns travel?

Answer 9

Vertically, up and down

Question 10

Columns can also be called…

Answer 10

“Groups” or “families.”

Question 11

Rows can also be called…

Answer 11

“Periods”

Question 12

How many different rows (periods) are there?

Answer 12

7 different rows

Question 13

What groups (columns) are main elements?

Answer 13

Groups 1,2 and 13-17.

18 sometimes is or sometimes isn’t considered a main element.

Question 14

When you are rounding a number with sig figs, do not…

Answer 14

Do not sequentially round. Just round by the number that is to the right of most important number that needs rounding

Question 15

How many different types of groups are there?

Answer 15

18 different groups