C2 Topic 2 Knowledge Test SDCC Flashcards

1

a full shell of electrons has...

8 on all shells
2 on all shells
2 electrons on shell 1, 8 on all others
8 on shell 1, 2 on all others

2

A substance containing more than one element joined by a chemical bond is a...

solid
compound
element
gas

3

what type of bond forms between sodium and chlorine?

ionic
covalent
metallic
weak

4

Which is insoluble?

lead chloride
all 3
barium sulphate
Silver chloride

5

what structure do ionic compounds have?

lattish
lettuce
lattice
spinach

6

what is a cation?

a negative ion
a positive ion
a neutral ion
any atom with a charge

7

what will be the chemical formula when Na⁺O^2- form an ionic bond?

Na2O2
NaO2
NaO
Na2O

8

If a compound ends in ate or ide it is...

a metal
ionic
covalent
awesome

9

How is a Na⁺ion formed from sodium?

it loses an electron
it loses 2 electrons
it gains an electron
it gains two electrons

10

If the question is about anion tests the answer is...

period 2
white precipitate
enzymes
brown precipitate

11

what ion does magnesium make?

mg-
mg2-
mg2+
mg+

12

what is barium sulphate used for?

making planes lighter
neutralising acids
coating electrodes
seeing intestines during x rays

13

Which are properties of ionic substances?

conduct when solid
all 3
high melting point
low boiling point

14

how does a chlorine atom form a Chloride ion Cl^-?

loses a proton
gains a proton
loses an electron
gains an electron

15

What colour flame will calcium ions produce?

yellow
purple
green
red

C2 Topic 2 Knowledge Test SDCC

Questions 15

C2 Topic 2 Knowledge Test SDCC

Questions 15