Name ______Period ______Score ____/25

REVIEW OF STANDARDS 1 AND 2

Materials needed: Graduated cylinder, 3 random objects, water, metric ruler, beaker.

Activity 1:

  1. Measure the volume of the given objects. Print the name of the object on the appropriate blank.
  2. Write the volume of each object using the correct units below. Be as accurate as the instrument allows. (3 points)

Object 1: ______Object 2: ______Object 3: ______

Volume: ______Volume: ______Volume: ______

Materials needed: triple beam balance, 3 random objects

Activity 2:

  1. Measure the mass of the given objects. Print the name of the object on the appropriate blank.
  2. Write the mass of each object using the correct units below. Be as accurate as the instrument allows. (3 points)

Object 1: ______Object 2: ______Object 3: ______

Mass: ______Mass: ______Mass: ______

Materials: periodic table

Activity 3:

  1. Using the periodic table, draw a model of an oxygen atom below.
  2. Label the nucleus, protons, neutrons, and electronscorrectly. Make sure to draw the correct number of subatomic particles. (4 points)

3. Why do we keep changing the model of the atom? (1 pt)______

Activity 4:

  1. Calculate the density of the elements below.
  2. Make sure you write the correct units and round to the accuracy of your measurements. (3 points)

a. GoldMass: 19.3 g Volume: 1 ccDensity:______

b. SilverMass: 36.75 g Volume: 3.5 cm3 Density:______

c. PlatinumMass: 54.27 g Volume: 2.7 mlDensity:______

3. Which metal would fall to the bottom of a lake first? (Assuming the metal pieces are the same shape and size.) 1 pt

______

Activity 5:

Answer the following questions:

  1. You are given a plastic cup, a chunk of foam, a rock, a lead fishing weight, and a pine twig. Organize the items according to their relative densities, least to most.(1 pt)

2. Now, comparing them to layers of the earth, match them with the appropriate layers. Draw lines. (1 pt)

FoamAir

LeadWater

PineCrust

RockMantle

PlasticCore

3. Draw a model of the layers of the Earth given above. Label them correctly. (5 pts)

4. Why is the densest material found at the Earth’s core? (1 pt)______

5. Draw what happens to the particles of a lead fishing sinker when the sinker is heated (If you had a magic

microscope that would show individual molecules of lead.) 1 pt

Before After

6. What happens to the speed of the particles in the sinker when it is heated?(1 pt)

a. The particles vibrate fasterb. The particles vibrate slowerc. The particles do not vibrate