Quiz about Matter Milestones Study

Question 1

The teacher shows students a pictorial model of an atom. Which element is represented by the model and what evidence is provided?

Accepted Answer

Fluorine because the model has 9 protons which is represented by the atomic number found on the periodic table.

Answer

Fluorine because the model has 19 neutrons and electrons which is represented by the atomic number found on the periodic table.

Answer

Fluorine because the model has 9 protons which is represented by the mass number found on the periodic table.

Answer

Neon because there are 10 neutrons which is represented by the atomic number found on the periodic table.

Question 2

Students are developing models to explore the difference between a pure substance and a mixture. The students have access to Lego blocks in three different colors. They make and label two examples of pure substances and mixtures. Which table is correct?

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 3

Arrange models from greatest to least amount of energy.

Accepted Answer

1, 4, 3, 2

Answer

2, 3, 4, 1

Answer

4, 3, 2, 1

Answer

1, 2, 3, 4

Question 4

A beaker with ice is placed on the counter in a science lab. The lab is at room temperature. After 20 minutes the ice becomes water. What kind of change occurred and what evidence validates your answer?

Accepted Answer

Physical Change; the evidence is that the water can be re-frozen in a freezer.

Answer

Chemical Change; the evidence is that the water can be re-frozen in a freezer.

Answer

Chemical Change; the evidence is that the water will evaporate becoming water vapor

Answer

Physical Change; the evidence is that the water will evaporate becoming water vapor.

Question 5

A scientist discovers a solid odd-shaped unknown substance in a container. She decides to investigate the properties of the substance. She has the following materials in the lab: Water, Beakers, A Triple Beam Balance, Bunsen burner, thermometer, and Hot Plate. She begins the investigation by collecting data using the following steps: 1. Weighs a beaker on the triple beam balance and writes down the mass. 2. Places the unknown substance in the beaker and weighs both, writing down the total mass.

What are the next steps and what property is being investigated?

Accepted Answer

Step 3: Subtract the beaker/unknown substance mass from the beaker mass. Step 4: Place the unknown substance in 10 mL of water and subtract the new volume from 10 mL. Step 5: Divide the mass of the unknown substance from Step 3 by the water displaced by the unknown substance. Type of Property: Density which is a physical property.

Answer

Step 3: Subtract the beaker/unknown substance mass from the beaker mass. Step 4: Place the unknown substance in 10 mL of water and subtract the new volume from 10 mL. Step 5: Divide the water displaced by the unknown substance by the mass of the unknown substance from Step 3. Type of Property: Density which is a physical property.

Answer

Step 3: Place water in the beaker and weigh the beaker. Step 4: Place the beaker on a hot plate with a thermometer Step 5: Measure the temperature after the water bubbles. Type of Property: Boiling Point which is a physical property

Answer

Step 3: Subtract the beaker/unknown substance mass from the beaker mass. Step 4: Take the substance out of the beaker and heat it over the Bunsen burner. Step 5: Observe and document the color of the unknown substance after it is burned for 2 minutes. Type of Property: Flammability which is a chemical property.

Question 6

Maya and Andrew are experimenting with the electrolysis of water. They are using the apparatus below to break water into its components.

Which model best provides evidence for the conservation of matter in this process?

Accepted Answer

2H2O <-> 2H2 + O2

Answer

H2O <-> 2H + O

Answer

H2O <-> H2 + O2

Answer

H2O <-> H2 + O

Question 7

The three jars show the movement of particles in three states of matter. Nitrogen is a gas at room temperature. The table provides the boiling and melting point of nitrogen.

Which jar represents nitrogen in a classroom?

Accepted Answer

Jar C

Answer

Jar A

Answer

Jar B

Answer

None of these Jars

Question 8

Nitrogen is a gas at room temperature. The table provides the boiling and melting point of nitrogen.

If the temperature in the Jar was lowered to the -346oF and then raised to -320oF, which sequence of jars represents these changes in temperature?

Accepted Answer

C to A to B

Answer

C to B to A

Answer

A to B to C

Answer

B to C to A

Question 9

There is a fresh water shortage in California. Scientists are now desalinating ocean water to help relieve the freshwater shortage. Desalination is the process by which salt water is heated until the water boils off and is collected in a separate container. Which of the following answers BEST describes the type of change and evidence to support the claim?

Accepted Answer

Physical Change and the evidence is the salt and water in separate containers

Answer

Physical Change and the evidence is the boiling salt water.

Answer

Chemical Change and the evidence is the salt and water in separate containers.

Answer

Chemical Change and the evidence is the boiling salt water.

Question 10

Students are coming into class. The teacher asks students to identify three models as elements, compounds, and mixtures. Each student creates and fills in a table to identify each. Which table is correct?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 11

Zack is experimenting by mixing vinegar and baking soda. The mass of the baking soda is 25 grams and the mass of the vinegar is 100 grams. Once the baking soda and vinegar is mixed the mixture bubbles and then settles after a minute. The mixture is weighed and the total mass is 103 grams. Which explanation best explains the new mass?

Accepted Answer

The Law of Conservation of Matter is not being broken because some of the mass is lost in the form of gas.

Answer

The Law of Conservation of Matter states that matter cannot be created or destroyed.

Answer

The mass of the reactants is equal to the mass of the products and therefore provides evidence of the Law of Conservation of Matter.

Answer

The Law of Conservation of Matter only applies to physical changes

Question 12

Students have four unknown powders in 4 different weigh trays. The teacher asks the students to investigate the properties of the substance. She has the following materials in the lab: Water, Beakers, A Triple Beam Balance, glass stirring rods, thermometer, and Hot Plate. She begins the investigation by collecting data using the following

steps: 1. Put water in four separate beakers.

2. Places the unknown substances in each beaker of water.

What are the next steps and what property is being investigated?

Accepted Answer

Step 3: Make an observation of the mixture to see what has happened to the powder. Step 4: Stir the mixture for 2 minutes Step 5: Observe the beaker again to see how much of the powder is still NOT dissolved. Type of Property: Solubility which is a physical property.

Answer

Step 3: Obtain the mass of the water/powder mixture. Step 4: Stir the mixture for 2 minutes Step 5: Obtain the mass again after stirring it for 2 minutes. Type of Property: Reactivity which is a physical property.

Answer

Step 3: Heat the water/powder mixtures up. Step 4: Record the amount of time it takes for each mixture to boil. Step 5: Compare the times it takes each mixture to boil. Type of Property: Boiling Point which is a physical property.

Answer

Step 3: Make an observation of the mixture to see what has happened to the powder. Step 4: Stir the mixture for 2 minutes. Step 5: Observe the beaker again to see how much of the powder is still NOT dissolved. Type of Property: Solubility which is a chemical property.

Question 13

Iron and Sulfur are heated together in a single test tube to react and form Iron Sulfide. The model below demonstrates this process.

Which of the following is the best evidence found in the model that supports the conservation of matter?

Accepted Answer

The number of iron and sulfur atoms found in the reactant are equal to those found in the product.

Answer

The number of compounds found in the reactant are equal to those found in the product.

Answer

The mass of the iron and sulfur is equal to the mass of the iron sulfide

Answer

The number of bonds in the reactant are equal to the number of bonds found in the product.

Question 14

Iron and Sulfur are heated together in a single test tube to react and form Iron Sulfide. The model below demonstrates this process.

How would you classify the substances in the reactant and product?

Accepted Answer

The reactant is a mixture and the product is a pure substance.

Answer

The products and reactants are both pure substances.

Answer

The products and reactants are both mixtures

Answer

The reactant is a pure substance and the product is a mixture.

Question 15

A water molecule (H2O) is represented in the model below. Which of the following tables correctly provides the total number of protons, neutrons, and electrons in this model?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 16

Three students that are in a group are assigned an element model project. The elements for their group are Beryllium, Magnesium, and Calcium. The models are below. Which of the following explains why they were asked to work and present together?

Accepted Answer

The models have 2 electrons in the outer ring and are found in the same group.

Answer

The models all have protons and neutrons in the nucleus and electrons outside the nucleus

Answer

The atomic numbers for each element are divisible by 4.

Answer

The mass numbers of the elements are all greater than the elements to the left on the periodic table and they are found in the same period.

Question 17

Adrienne and Tonya were completing their data from a lab. The students had wells with clear liquids in each of them. In each container students add another liquid. The numbering system of the plate and the results for unknown liquid A are listed below.

Which of the following claims provides the most accurate evidence?

Accepted Answer

There is no reaction in cells A1 and A3. There is a chemical change in cells A2, A4, and A5 because color change, bubbling, and precipitates are all evidence of a chemical change.

Answer

There are physical changes occurring in cells A1 and A3. There are chemical changes occurring in cells A2, A4, and A5 due to a chemical reaction

Answer

There are chemical changes occurring in cells A1 and A3. There are physical changes occurring in cells A2, A4, and A5 due to color changes and bubbling.

Answer

There is no reaction in cells A1 and A3. There is a physical change occurring in cell A4 because bubbling is associated with boiling. Chemical changes are occurring in cells A2 and A5.