What happens to mass when objects are mixed?

 January 11, 2021                                        Grade 5

What happens to mass when objects are mixed?

Materials scientists investigate how substances can mix together by performing experiments and collecting data. How can you investigate the properties of a mixture of substances?

Objective: Students will carry out an investigation and use mathematics to provide evidence that mass is conserved when objects are mixed.

Procedure:

1. Place 10 small beads (or any other similar material) on one side of the balance.

2. Place gram cubes on the other side of the balance until the two sides are balanced.

3. In the table, record the number of gram cubes. Remove the beads and gram cubes from the balance.

4. Repeat steps 1-3 with the medium beads (or any other material). Repeat with the large beads.

5. Measure all 30 beads together.

Ahmed Fali Hamad

We have three sets : 

1- glass beads it is weight is 19.2 g,  2- plastic beads set it is weight is 7.5 g ,  3- Coins set it is weight is 18.5 g  . Weight total is 45.2 

Conclusion: the weight of sets didn't change when we measure the weight of each one by itself and measured the weight of them altogether.

Zainab Mohammed

We have three sets of stones. The mass before mixing is 

1 = 173 g​​​​​

2= 47 g 

3= 35 g 

When I put them together the mass after mixing is 255 g 

I conclude the mass stays the same before and after mixing.

​

Ahmed Salah

  

Yusuf Ali
Hello, teacher! I used two materials. I used chickpeas 140 grams and I used beans 150 grams

Zainab Mohammed

Shagad