Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous.
a. Plain yogurt b. Chicken noodle soup c. Titanium d. Table salt
What we know:
A pure substance is made up of only one type of particle.
A mixture is a substance composed of two or more particles.
An element is a substance that cannot be chemically broken down into simpler substances.
A compound is a substance composed of two or more elements.
A heterogeneous mixture is one in which the composition varies from one region of the mixture to another.
A homogeneous mixture is one with the same composition throughout.
a. mixture, homogeneous
b. mixture, heterogeneous
c. pure substance, element
d. pure substance, compound
Write the electron configuration for each ion.
a. Li+ b. I- c. S2- d. Al3+ e. Co2+
Strategy: Help can be found in the following link. 6.8: Electron Configurations
e. [Ar] 3d7