Day by Day, Nature & Animals, Science and Nature

Chemistry – mass and weight November 2018

I always think the concept of mass versus weight is a difficult one, especially as we generally use the terms interchangeably in our every day language.

Mass is the amount of matter in an object, and weight is the force of gravity acting on it. So, Dancing Toes’ mass will be the same whether she is standing on earth or the moon, or Mars, but her weight will be different.

img_1626

To demonstrate mass, we measured out ingredients on a balance scale, in grams.

To demonstrate weight, we hung an assortment of items on a spring balance (used by the boys for IGCSE physics) and recorded how far they made the spring stretch. ie the effect of gravity on them. Weight is measured Newtons (after Isaac Newton).

It gets more complicated by IGCSE level and it was often the boys explaining to me, but I can just about manage an explanation at this stage!

img_1550

1 thought on “Chemistry – mass and weight November 2018”

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s