Mixtures
What are the three states of matter
Solid, liquid, gas
True or False?
Reversible change are changes that can be undone without any permanent damage
True
True or false
A physical change is reversible, the elements have not changed
Does an acid or a base have a pH of less than 7
Acids
The process in which a solid is turned into a liquid by heat
Melting
What are the 4 changes of states
Melting, freezing, evaporation, condensation
Changes in materials that can't be undone or reversed. They go through a permanent change
Irreversible change
When one element becomes a new element. It is irreversible.
Chemical change
Does an acid or a base have a pH of greater than 7
Base
The process that causes a solution to go from liquid to solid
Freezing
What are the two different types of mixtures?
Homeogeneous and Heterogeneous mixture
Is melting ice reversible or irreversible?
Reversible
Which row is the reactant and which row is the product?
Row A: sugar, flour, egg
Row B: cake
Row A (sugar, flour, egg) is the reactant
Row B (cake) is the product
What can be used to determine if a liquid is an acid or a base?
Litmus Paper
What property of water causes it to form droplets?
Surface Tension
A mixture that is mixed together and can be dissolved (salt and water)
Homogeneous mixture
Is cooking an egg reversible or irreversible?
Irreversible
Is baking a cake a physical or chemical change?
Chemical change
If a litmus paper goes from red to blue, it is a....
Base
What are 2 ways you can separate mixtures?
Answer can be sieves, magnets, air, water, evaporation, filtration
A mixture made of two or more substances that are mixed together but not dissolved together (sand in water)
Heterogeneous mixture
True or False
Burning wood is a reversible change
False
Is making a salad a physical or chemical change?
Physical change
If a litmus paper goes from blue to red, it is an....
Acid
Suspensions are considered _________ mixtures
Heterogeneous