Summative Test Science 9 2f4u7

Summative Assessment Write the letter of the best answer.

1. Element X belongs to Group I. Which of the following best describes elernent X?

A. high electronegativrty B. high ionization energy C. low electronegatmty D. a non-metalirc element 2. What Will most likely happen to a non-metallic atom after oni«: bonding? l. it forms a cation Ill. It becomes stable ll. It forms an amon IV. It becomes unstable A 18 11

3. What kind Of bond result when two identical non,rnotntliC atoms combine?

A

ionic bond Be metal's bond

C

covalont bond O nonpolat covalont bond

4. Choose two e"ements that would lakely tottn an ionic. bond eJements- L). S. F. Ne

A B 5.

and Sa

C No and Si

So and F

How the bond tn

D Liana F

dtffetent

The bond n Bt:1S meta&.:

the bond tn

the tX)nd jn MgF; is covalent.

B The bond tn BC: ts the bond covalent, C, The covakynt the t»nd Ionic O. There ts no bond d"erence the two Why do atoms react With one another to fr:rm chem.cal bonds?

A B

to attan stabåty C to form molecules

to fom 7. What end of force s A reputsrve force

O to prcxjuce 'Ons onc t.ondl C. neutral force

B. ekctrostatc force

O. retentjve force

S- Which cf he substances when dzsc&e jn water conduct electncrty? C. gasoline O. monosodium glutamate

glucose

g. Whä bond ho'ds the atoms of the e"ements in Groups 1 and 2 of the Penodc not-pour ccvaient bond C. metalbc bond B. poe cceent bord D. tonic bond I' Whch of the sets of samples has metalbc bond. covalent bord and onic bordng n thes order?

A. bronze. paraffn wax. and salt B- azy. vet-so, and water

C. go" ring. bdong sua, md starch

O. coins, se and carbon drnde