Answer:
The angle at which the light from the ray box strikes the mirror
Explanation:
The independent variable is the variable that the investigator changes. The question states that Alice "changed the angle at which the light from the ray box struck the mirror."
The light box and the direction of the ray are wrong. They are controlled variables.
The angle of the reflected light is wrong. It is the dependent variable.
Two properties of Iodine are:
1) Iodine is located in group VIIA of the periodic table, it is a halogen and has 7 valence electrons, therefore it is a very reactive element and tends to form bonds with elements of group IA that have a valence electron.
2) Due to its high electronegativity, it tends to steal electrons, so it is an oxidizing element, it is solid at room temperature, opaque and has a purple-gray color in the solid state and violet in the gaseous state.
In summary, two properties of iodine will be:
1) Very reactive element
2) Oxidizing element
Other properties that you can add are:
3) solid at room temperature.
4) Opaque
Plants can reproduce through either sexual or asexual means. Sexual reproduction involves pollination helped by wind and or insects. Asexual reproduction involves tubers, bulbs and runners known as rhizomes and stolons as well as cuttings taken by humans.
Answer: Here are some examples
Explanation:
1. In the southern spring, ozone is destroyed above Antarctica, mainly by manufactured compounds called chlorofluorocarbons (CFCs )
2. It is now generally accepted that the loss of stratospheric ozone is caused by chemical reactions initiated by chlorofluorocarbons.
3. Your refrigerator and other home appliances emit Chlorofluorocarbons, or CFCs, as do aerosol spray cans.
Hope this hlps!