WorksheetsNature of Matter Review
Total questions: 20
Worksheet time: 19mins
1. A substance is provided in a jar. The table includes the student’s observations. Use them to correctly identify the substance as a homogeneous mixture or heterogeneous mixture.
A. The substance is a homogeneous mixture because the particles are evenly distributed.
A. The substance is a heterogeneous mixture because the particles are evenly distributed
A. The substance is a homogeneous mixture because the particles are not evenly distributed.
A. The substance is a heterogeneous mixture because the particles are not evenly distributed.
1. Use the models of matter to BEST classify each substance.
Model 1 is a compound, Model 2 is a mixture, Model 3 is an element
Model 1 is a compound, Model 2 is an element, Model 3 is a mixture
Model 1 is a mixture, Model 2 is an element, Model 3 is a compound
Model 1 is an element, Model 2 is a compound, Model 3 is a mixture
Use the diagram to answer the question. Julian removes boiling water from a heat source and places it in a freezer. He then records the water’s temperature as it freezes. The diagram represents the data recorded.
Which segment of the diagram shows where the molecules of water will have the least energy?
segment A
segment B
segment C
segment D
segment E
1. If thermal energy were removed from Model 3, which model BEST represents the new arrangement of particles?
model
model 2
model 3
model 4
1. According to the table, which substance would sink in water?
helium
mercury
oxygen
iron pyrite
1. Leah is conducting an investigation to determine the identity of an unknown substance. The following data was collected.
1. The substance is yellow.
2. The substance melts at 273 degrees Celsius.
3. When in the presence of a flame, the substance does not burn.
4. When placed in water the substance floats.
5. When the substance is added to hydrochloric acid, a gas forms and
temperature change occurs.
1, 3, 5
2, 3. 4
1, 2, 4
3, 4, 5
1. Melting crayons is an example of _____________.
physical change
physical property
chemical change
chemical property
While outside playing ball, Naisir slid on the ground and ripped a hole in his pants. Choose the statement that correctly identifies the type of change that occurred and the supporting evidence.
A chemical change happened because a new substance was created.
A chemical change happened because there was a permanent change to his pants.
A physical change happened because there is not a new substance being formed.
A physical change happened because he physically slid on the ground to cause the rip.
1. According to the section periodic table, how many protons are in oxygen?
6
8
10
16
Use the section of periodic table to determine what element is represented in the model.
potassium
lithium
sodium
beryllium
1. Select the model that BEST represents the Law of Conservation of Matter.
1. Based on Law of Conservation of Matter, how many total atoms much in the product of the balanced chemical equation?
2
4
6
12
1. Which substance can be identified as a homogeneous mixture?
peanut butter sandwich
chocolate chip cookie
pepperoni pizza
chocolate milk
Which term BEST describes a substance composed of a single element or a single compound that cannot be broken down by physical means?
homogeneous mixture
heterogeneous mixture
pure substance
element
Zariah places water in a freezer. Several hours later, she observes that the water has frozen. Which statement BEST describes the arrangement and motion of particles in the ice?
The particles have the least energy and vibrate in a fixed position
The particles have more energy and are able to move past each other
The particles have high energy and move about freely
The particles have high energy, are charged and move about freely
When a solid melts, what happens to the speed and arrangement of the molecules?
The particles speed up and are close together
The particles speed up and spread out
The particles slow down and are close together
The particles slow down and spread out
What is an example of a chemical property?
ductility
color
thermal conductivy
reactivity with water
How are elements in the modern periodic table arranged?
by the number of electrons
by the number of neutrons
by the atomic mass
by the atomic number
Jaylen mixes 30 grams of baking soda with 100 grams of vinegar in a closed container. Based on the Law of Conservation of Matter, what represents the total mass of all reactants after the experiment?
30 grams
70 grams
130 grams
170 grams
Marianna reviews the reactants in a chemical equation. How many total oxygen (O) atoms must be in the products according to the Law of Conservation of Matter?
NO2 + H2O
1
2
3
4
