Worksheetschemistry
Total questions: 8
Worksheet time: 4mins
Name
Class
Date
1.
what is sagitarius a
a)
supermassive black hole
b)
black hole in the centere of our galaxy
c)
star
d)
cannot say
2.
the black hole 🕳 10times the size os sagiterius a
a)
lb1
b)
sagitarius a
c)
cannoy say
d)
J2157
3.
WHAT DOES READ LEAD CONSIST OFF
a)
1 PBO2 AND 2 PBO
b)
LEAD AND OXEGEN
c)
CANT SAY
d)
NITROJEN
4.
THE ELEMENT WITH THE LARGEST ATOMIC NUMBER
a)
OXEGEN
b)
XENON
c)
UNUNOCTIUM
d)
RADIUM
5.
WHO TOLD THE ATOMIC THEOARY
a)
JOHN DALTON
b)
ARISTOTTLE
c)
ME
d)
WALT DISNEY
6.
THE MOST RADIOACTIVE METAL
a)
RADIUM
b)
UNUNOCY=TIUM
c)
PLUTONIUM
d)
RADIUM
7.
THE VALENCYOF SODIUM IN NACL
a)
+2
b)
-2
c)
-1
d)
+1
8.
WHAT WILL 2NaNo3 decompose into
a)
DO NOT KNOW
b)
2 NaNo2 and O2
c)
CANT SAY
NANO ,O4
100 %
