Chem 1010 module 3

Elements that are in the same ________ have a tendency to have very similar chemical properties due to periodic trends.

Group

Define Heterogeneous mixture

Unevenly distributed( trail mix)

Which of the following statements best describes an element?

a material consisting of only one type of atom

What is the name of the following compound: CaCO3

calcium carbonate

Classify the following changes as physical or chemical. Wood burns to ashes; water begins to boil; grass grows; a rock is crushed to powder.

chemical; physical; chemical; physical

What is the name for prefix 2?

di

What is the name of the following compound: N2O4

dinitrogen tetroxide

Define Homogeneous mixture

evenly mixed(koolaid)

What is the name for prefix 1?

mono

Which of the following would be considered a chemical property?

reactivity towards water

Which of the following elements is a transition metal?

silver (Ag)

What is the name for prefix 4?

tetra

What is the name for prefix 3?

tri

Typical levels of fluoride found in fluoridated public drinking water are about 1.00 ppm. If you were to drink 2.0 L of this water, how many mg of fluoride would you ingest?

2 mg

Mixtures can be separated into their components by taking advantage of differences in the chemical properties of the components. Why might this separation method be less convenient than taking advantage of differences in the physical properties of the components?

A chemical property involves a chemical change so that you no longer have what you had.

Evaporation of gas Is this an example of chemical or physical change?

A. chemical B. physical

What reacts to water?

Chemical changes