Preap Chemical Formulas And Equations (Page 2 of 2) in pdf

Preap Chemical Formulas And Equations Page 2

Unit 4 V ocabulary

C hemical F ormulas a nd E quations

1. Chemical P roperties -‐

a p roperty o r b ehavior o f a s ubstance

when i t u ndergoes a c hemical c hange o r r

eaction

2. Element -‐

a s ubstance c onsisting o f a toms w hich a ll h ave t he

same n umber o f p

rotons

3. Compound -‐

a s ubstance f ormed w hen t wo o r m ore e lements

are c hemically b onded t

ogether.

4. Subscript – t he n umber w ritten t o t he r ight a nd s lightly b elow

an e lement i n a c hemical f ormula; r epresents t he n umber o f

atoms o f a n e lement p resent i n a c hemical f ormula

5. Chemical c hange – t he f ormation o f a n ew s ubstance w ith

different p roperties; c annot b e u ndone b y p hysical m eans

6. Chemical e quation – a r epresentation o f a c hemical r eaction

by s ymbols a nd n umbers

7. Chemical f ormula – a r epresentation o f a s ubstance i n w hich

the e lements a re r epresented b y t heir s ymbols a nd s ubscripts

represent t he n umber o f a toms o f e ach e lement

8. Chemical r eaction – a c hange c aused b y t he i nteraction o f t wo

or m ore s ubstances ( reactants) r esulting i n t he f ormation o f

new s ubstances ( products)

9. Coefficient – t he n umber p laced i n f ront o f a c hemical f ormula

in a c hemical e quation; r epresents t he n umber o f m olecules o f

that s ubstance

10.

Product – s ubstance(s) r esulting f rom a c hemical r eaction

11.

Reactant – s ubstances t hat a re c ombined a nd c hanged

12.

Yield – t he q uantity o f p roduct f ormed a s a r esult o f a

chemical r eaction

Preap Chemical Formulas And Equations Page 2