1 - 5 density\nthe concept of density is about how close atoms and molecules are. if a substance is dense…

1 - 5 density\nthe concept of density is about how close atoms and molecules are. if a substance is dense, its atoms or molecules are close together.\nexample: the dots below represent atoms.\nin the first example we have 9 dots - 1 dot per square. there is a lot of space in between the dots (atoms). look at the square labeled “a”. there is only 1 dot in the square.\nexample 1\none dot (atom) in square a\nin the second example we take the same 9 dots, but we put them all in one square. now there is not a lot of space between the dots (atoms). look at the square labeled “a”. now there are 9 dots in the square.\nexample 2\nnine dots (atoms) in square a\n1. how many total dots are in example 1? 9 how many in example 2? 9\n2. in which example are the dots (atoms) closer together? example #\n3. in which example do the dots take up more space (more volume)? #\n4. which example shows a greater density in square a? #\nto calculate density we need to know how many dots (atoms) are in a substance and how much space the dots (atoms) take up.\n5. which choice below is a measure of how many atoms/molecules are in a substance (circle it)?\nweight mass volume\n6. which choice below is a measure of how much space an object takes up (circle it)?\nweight mass volume

1 - 5 density\nthe concept of density is about how close atoms and molecules are. if a substance is dense, its atoms or molecules are close together.\nexample: the dots below represent atoms.\nin the first example we have 9 dots - 1 dot per square. there is a lot of space in between the dots (atoms). look at the square labeled “a”. there is only 1 dot in the square.\nexample 1\none dot (atom) in square a\nin the second example we take the same 9 dots, but we put them all in one square. now there is not a lot of space between the dots (atoms). look at the square labeled “a”. now there are 9 dots in the square.\nexample 2\nnine dots (atoms) in square a\n1. how many total dots are in example 1? 9 how many in example 2? 9\n2. in which example are the dots (atoms) closer together? example #\n3. in which example do the dots take up more space (more volume)? #\n4. which example shows a greater density in square a? #\nto calculate density we need to know how many dots (atoms) are in a substance and how much space the dots (atoms) take up.\n5. which choice below is a measure of how many atoms/molecules are in a substance (circle it)?\nweight mass volume\n6. which choice below is a measure of how much space an object takes up (circle it)?\nweight mass volume

Answer

Explanation:

Step1: Count dots in examples

Both example 1 and example 2 have 9 dots as stated in the problem - text.

Step2: Compare dot - closeness

In example 2, the 9 dots are in one square while in example 1, 9 dots are spread over multiple squares. So dots are closer together in example 2.

Step3: Compare space taken up

In example 1, dots are spread out, so they take up more space (volume).

Step4: Compare density

Density is mass/volume. In square A, example 2 has 9 dots and example 1 has 1 dot. So example 2 has greater density in square A.

Step5: Identify measure of atoms/molecules

Mass is a measure of how many atoms/molecules are in a substance.

Step6: Identify measure of space

Volume is a measure of how much space an object takes up.

Answer:

  1. 9; 9
  2. 2
  3. 1
  4. 2
  5. mass
  6. volume