Unit 1- Properties & Structures of Matter PRETEST
Quiz by Amanda Rogers
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includes Teacher and Student dashboards
Measures 6 skills from
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- Q1What is the difference between a pure substance and a mixture?A pure substance cannot be separated into its components, while a mixture can be separated.A pure substance is always a gas, while a mixture can be a solid, liquid, or gas.A pure substance is made up of only one type of substance, while a mixture is made up of multiple substances.A pure substance is always a liquid, while a mixture can be a solid, liquid, or gas.120sS8P1a
- Q2
Summarize the Venn diagram.
A pure substance may contain subatomic particles but not atoms.
Atoms are the most basic form of matter. They combine to form larger electrically stable compounds.
Compounds are found inside the matter of atoms.
Compounds are the most basic form of matter. They combine to form larger atoms.
120sS8P1a - Q3
Which image(s) would be considered pure substances?
III and V
V
I and II
II and IV
120sS8P1a - Q4
Elaborate on how to classify elements and pure compounds.
They are heterogeneous materials because they do not have a uniform composition or appearance throughout.
These materials are homogeneous mixtures because they have a uniform composition throughout.
These can be either homogeneous or heterogeneous materials based on the individual solubility of each.
Elements and pure compounds are homogeneous materials because they have a uniform composition throughout.
120sS8P1a - Q5
To make salt water a heterogeneous mixture, you would have to
remove the salt.
add sand.
boil the water.
add a small amount of sugar
120sS8P1a - Q6
When a substance such as ice melts, its temperature increases. Describe what happens to the arrangement of the water molecules as the temperature increases
Water molecules lose all contact with one another and intermolecular forces are non- existent.
Water molecules become less orderly and they spread apart.
The kinetic energy of the water molecules decreases proportionally to the temperature change
Water molecules separate into hydrogen and oxygen atoms.
120sS8P1b - Q7
The circle on the left shows a magnified view of a very small portion of liquid water in a closed container. What would the magnified view show after the water evaporates?
120sS8P1b - Q8
Elaborate on the reason(s) that matter is said to move even as in a solid state.
The particles have sufficient energy to become an ionized gas and are in the most common state of matter in the universe.
The particles are bound through intermolecular forces but are able to move past each other with relative freedom.
The particles are not able to move out of their positions relative to one another, but do have small vibrational movements
The particles are not bound to one another, move quickly, have a low density, and are able to spread apart from one another if unconstrained
120sS8P1b - Q9
Arrange the substances in the table from the MOST to the LEAST ordered particle arrangement.
water, wood, neon gas
water, neon gas, wood
wood, water, neon gas
wood, neon gas, water
120sS8P1b - Q10
When she dropped a rock into a graduated cylinder of water, Veronica noticed it sank to the bottom. She decided to investigate what it would do if she tossed it into a much larger amount of water. When she tossed it into a lake, the rock sank again. Which statement best explained why this happened?
The density of a substance is the same regardless of the amount.
The rock was already wet from being submerged in the graduated cylinder of water.
The lake had become less dense because of heavy rains in the past month.
An object's density changes based on the amount of substance in which it is submerged.
120sS8P1c - Q11
A student wants to conduct an investigation that will determine a physical property of an unknown substance. Which of these procedures would best measure a physical property of the unknown sample?
1. Break the sample into a fine powder
2. Add the powder to a 500 mL beaker
3. Add 300 mL of water to the beaker and use to stirring rod to mix
4. Using a dropper, add 4 drops of universal pH indicator to the solution
5.Observe any color change in the sample
6. Record your observations
1. Create an acidic solution by adding 5 mL vinegar to 100 mL water
2. Place the sample into the acidic solution
3. Observe if the sample begins to fizz in the solution
4. Record your observations
1. Using tongs, hold the sample over a flame
2. Observe if the sample catches on fire
3. Record your observations
1. Place the sample in a resealable, zip-top bag
2. Firmly close the zip-top bag
3. Lightly tap the sample with a hammer
4. Observe if the sample dents, breaks, or shatters
5. Record your observations
120sS8P1c - Q12
You measure an unknown substance with litmus paper and determine it to be a strong acid. Where would you place this property in the Venn diagram?
B
A
D
C
120sS8P1c - Q13
Atom A has an atomic number of 19 and mass number of 40. Atom B has an atomic number of 20 and a mass number of 40. Which of these is an accurate statement?
Atom A has more protons than Atom B.
Atom A has an extra nucleon compared to Atom B.
Atom A has one more proton and one more electron than Atom B
Atom A has one less proton and one more neutron than Atom B.
120sS8P1e - Q14
The periodic table is an arrangement of the chemical elements, ordered by atomic number, into families, and by doing so illustrates the periodic properties of the elements. Scan the periodic table from left to right. What trends among the properties of elements are apparent? All BUT ONE could apply.
solid to gas
metal to metalloid to non-metal
reactive to nonreactive
increasing number of outer-shell electrons
120sS8P1e - Q15
Neutrons are found in the nucleus and separate the other particles so that the strong force can hold the nucleus together. Which particles are positively charged and need to be separated so that they don't repel?
protons
neutrons
quarks
electrons
120sS8P1e
