Law of Conservation
What happens to matter when substances are mixed?
Matter is conserved
What are the 3 subparticle in an atom?
Protons
Neutrons
Electrons
When two substances are mixed, does the total amount of matter increase, decrease, or stay the same?
Stays the same
When two or more atoms held together by a chemical bond is referred to as a:
Molecule
A scientist mixes 15 g of sugar with 40 g of water. What is the new total weight?
55 grams
When two or more atoms held together by a chemical bond is referred to as a:
Water Molecule
Why is dissolved matter still considered matter?
It still has mass and takes up space
A student mixes 50 grams of salt with 200 grams of water in a beaker. After stirring, the salt completely dissolves. The student weighs the solution and finds the total mass is 250 grams.
What does this experiment show?
A. The beaker becomes heavier when the salt dissolves.
B. The mass of the water changes when the salt dissolves.
C. The salt disappears when mixed with water, reducing the total mass.
D. The total mass of matter stays the same when substances are mixed.
D. The total mass of matter stays the same when substances are mixed.
Give one example you heard in class of an:
Atom
Molecule
Compound
Atom-Oxygen
Molecule- H2O, O2
Compound- Can be any thing such as H2O as long as it shows two or more DIFFERENT elements bonded together.