Q&A - P3 Science

[jwxh]

another question which i need help!tks

The below shows how some objects have been classified based on the property of the materials they are made of. X & Y represent the head of the table.
X Y
paper clip Styrofoam cup
iron nail gold necklace
object A object B

what could object A & object B be?
Object A Object B
(1) gold pendant rubber ball
(2) aluminium foil cotton wool
(3) iron safety pin silver necklace
(4) aluminium foil copper pot

[jwxh]

another question which i need help!tks

The below shows how some objects have been classified based on the property of the materials they are made of. X & Y represent the head of the table.
X - paper clip, iron nail & object A
Y - styrofoam cup, gold necklace & object B

what could object A & object B be?
Object A
(1) gold pendant
(2) aluminium foil
(3) iron safety pin
(4) aluminium foil

object B
(1) rubber ball
(2) cotton wool
(3) silver necklace
(4) copper pot

[sleepyqueen]

jwxh:

plse help!

1) only the food carrying tubes was removed from the plant. the plant was still alive after a few days. Which of the following reasons best explains why the plant was able to remain alive?
a) the root was able to absorb food from the soil
b) the root was still able to absorb mineral salts from the soil
c) the root was able to absorb water for the leaf to make food
d) the leaf was able to to make food and transport it to the root.

my answer is B.
Roots only absorb mineral salt and water from the soil. hence A is out. C and D cannot happen as the food carrying tubes was removed.

[sleepyqueen]

jwxh:

another question which i need help!tks

The below shows how some objects have been classified based on the property of the materials they are made of. X & Y represent the head of the table.
X - paper clip, iron nail & object A
Y - styrofoam cup, gold necklace & object B

what could object A & object B be?
Object A
(1) gold pendant
(2) aluminium foil
(3) iron safety pin
(4) aluminium foil

object B
(1) rubber ball
(2) cotton wool
(3) silver necklace
(4) copper pot

X - paper clip, iron nail & object A properties both metal, both can be conductors, both can be temp magnet
Y - styrofoam cup, gold necklace & object Bproperties of the elments in the group: non-metal & metal, Insulator and conductors, both cannot be a temp magnet

My answer is 3

[jwxh]

are silver and gold non-mental?

[savoury sweet]

jwxh:

are silver and gold non-mental?

Both are metal

[sleepyqueen]

savoury sweet:

jwxh:

are silver and gold non-mental?

Both are metal

sorry u are correct they are all metal.
Was trying to say they cannot become a temp magnet.

So sorry for the mistake

[jwxh]

tks u all

[verykiasumummy]

sleepyqueen:

savoury sweet:

[quote=\"jwxh\"]are silver and gold non-mental?

Both are metal

sorry u are correct they are all metal.
Was trying to say they cannot become a temp magnet.

So sorry for the mistake[/quote]only magnetic material can be made into temporary magnets.. gold and silver are not magnetic material..

[bluesclue]

bluesclue:

hi qms, jedamum, ramgee, jacplace

hi,
another forumer got her dd to verify with teacher at school.
Ans key given were wrong indeed.
see http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=38&t=4375&start=1640

Thanks