Hello, Could someone please give me a basic understanding of these prompts for me to build upon for my chemistry test out 1. Cite evidence for how we know that matter contains positive and negative charges

2.Cite evidence for how we know that negative charges are able to move in a substance

3. Describe how the moving of charges can result in either positive or negative ions

4. Cite evidence for how we know that ionic substances dissociate in water and molecular substances to not.

5. Given a chemical formula, be able to determine whether it would dissociate into ions when dissolved

6. Be able to distinguish between metals and non-metals based on their properties and position on the periodic table.

7.Given the formula of an ionic or molecular substance, state its name

8.Given the name of an ionic or molecular substance, determine its formula.

9.Be able to distinguish how molecular and ionic substances differ on the atomic level.

10.Based on particle arrangement, be able to determine molecular and ionic formulas.

Follow the steps provided in the simulation to add water to the graduated cylinder, select one of the three samples (copper, silver, or gold), set its mass to the values given in the statements below, and calculate its density. here is a summary of the steps required: add water by clicking and holding prepare a known volume of water button. until the desired volume of water has been added. if more than the desired volume is added, click the reset button. button and redo the procedure. a single click will add about 21.0 ml of water. to set the mass, click and hold weigh out metal button. until the desired amount of metal is added to the weighing pan. once the desired mass of the metal is added, release the button. transfer the metal to water and then click on calculate density button. to see how the density is calculated using water displacement to measure the volume of the solid. to save time you can approximate the initial volume of water to â±1 ml and the initial mass of the solid to â±1 g. for example, if you are asked to add 23 ml of water, add between 22 ml and 24 ml. which metals in each of the following sets will have equal density? check all that apply.

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.