Matter and Atoms
What is NOT a matter of following:
A - paper
B - rainbow
C - heat above the oven
D - air
B - rainbow
C - heat above the oven
what CHARGE is CATION?
POSITIVE
What will be TWO FACING poles of two MAGNETS, which REPEL each other?
south and south, or north and north
What quantity has units of 1 metre cube?
Volume
What has HIGHER density : GOLD or WOOD ?
GOLD
What change has happen, if STEAM changes to WATER ?
How two atoms have to be charged to ATTRACT each other?
opposite charge
what is in the MIDDLE of a tube MAGNET?
How many litres will be in a tube of 35 dm3
35
OIL
What is the temperature for melting water substance in celsius?
0 celsius
what happens to NEUTRAL ATOM to be charged NEGATIVELY?
it gains ELECTRONS
What is the dirrection of magnetic lines of magnetic force?
From North to South
How many minutes will be 2,5h?
90
what is the formula of density?
D = m / V
What number gives us number of PROTONS in Atom?
Atomic number
What do I need to create a simple CIRCUIT and make a BULB light up?
wires, bulb, battery, (switch)
How do we material, which is attracted to a magnet?
Ferromagnetic matter
How many kilograms will be 600g?
0,6
What do I need to calculate density of an objec?
volume and mass of the object
What do I need to know, if I want to calculate how many NEUTRONS are in an atom of OXYGEN?
Atomic mass - Atomic number
(found in the periodic table)
Name 3 kinds of lightning
between the clouds, inside one cloud, between the ground and a cloud
How can I recognize which pole of a magnet is South and which is North?
By using a compass - the North arrow will be attracted to South
Mass
If the density is 2 g/cm3, and volume of the object is 4ml, what is the MASS?
m = D . V = 2 . 4 = 8 g