SCIENCE

Question 1

Mg3(PO4)2

Answer 1

3 atoms of magnesium
2 atoms of phosphorus
8( oxygen) (4x2) atoms of oxygen

Question 2

PHYSICAL PROPERTIES OF SALT

Answer 2

CRYSTALLINE
AMORPHUS
WHITE

Question 3

4Pb(NO3)2

Answer 3

4 atoms of lead
8 atoms of nitrogen ( 1 x 2 x 4 )
24 atoms of oxygen ( 3 x 2 x 4)

Question 4

CUTTING A APPLE

PHYSICAL OR CHEMICAL PROPERTY?

Answer 4

PHYSICAL

Question 5

BUBBLES FORM WHEN BAKING SODA MIXED WITH LEMON JUICE

PHYSICAL OR CHEMICAL PROPERTY

Answer 5

CHEMICAL PROPERTY

Question 6

The mass of a substance is a example of a qualitative property. True or false
rewrite

Answer 6

false
The mass of a substance is not an example of a qualitative property

Question 7

he developed the billiard ball model

Answer 7

JOHN DALTON

Question 8

BOHR INVENTED THE WHAT?

Answer 8

ENERGY SHELLS AND ORBIT AROUND THE NUCLEUS.

Question 9

WHO INVENTED THE ATOMIC THEORY?

Answer 9

DEMOCRITUS

Question 10

CHADWICK INVENTED THE WHAT?

Answer 10

NEUTRONS

Question 11

WHO INVENTED THE GOLD FOIL EXPERIMENT?

Answer 11

ERENEST RUTHORFORD

Question 12

J.J THOMSON INVENTED THE WHAT?

Answer 12

RASIN BUN MODEL

Question 13

A PERIOD 3 ELEMENT WITH A FULL VALENCE SHELL.

Answer 13

Ar ( Argon )

Question 14

2(NH4)3N

Answer 14

of S = 8

of N = 8
# of H = 24

Question 15

12NaBr

Answer 15

Na = 12
Br = 12

Question 16

WHAT IS THE FORMULA FOR MASS

Answer 16

D X V
DENSITY X VOLUME

Question 17

3 QUANTITATIVE CHARACTERISTICS PHYSICAL PROPERTIES OF WATER

Answer 17

1 = BOILING POINT
2= MELTING POINT
3 = FREEZING POINT