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Biblioteka

Chemistry Semester 1 Exam 2022

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Posljednje ažuriranje almost 4 years ago
44 questions
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Pitanje 1
1.

Which is the state of matter that has a definite shape and definite volume?

Pitanje 2
2.

Which is the state change in which a gas becomes a liquid?

Pitanje 3
3.

Which is the type of separation technique being demonstrated in the figure?

Pitanje 4
4.

Which is the state of matter shown in this figure?

Pitanje 5
5.

Which of the following substances is an element?

Pitanje 6
6.

Which is NOT a chemical change?

Pitanje 7
7.

Which is a compound?

Pitanje 8
8.

What is the density of an object having a mass of 7.9 g and a volume of 37.15 cubic centimeters?

Pitanje 9
9.

What is the volume of an object with a density of 9.09 g/cm3 and a mass of 542 g?

Pitanje 10
10.

This radioactive particle has two protons and two neutrons.

Pitanje 11
11.

Which subatomic particle has a negative charge?

Pitanje 12
12.

The particles that are found in the nucleus of an atom are ____.

Pitanje 13
13.

How many significant figures in the number 50.010?

Pitanje 14
14.

Which numbers below have 1 significant figure

Pitanje 15
15.

All atoms of the same element have the same ____.

Pitanje 16
16.

Isotopes of the same element have different ____.

Pitanje 17
17.

Who was the man who lived from 460B.C.–370B.C. and was among the first to suggest the idea of atoms?

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Pitanje 28
28.

Which of the following elements is a d-block element?

Pitanje 29
29.

What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p?

Pitanje 30
30.

Which is the correct electron dot diagram for the element Silicon (Si)?

Pitanje 31
31.

What is the electron configuration of potassium?

Pitanje 32
32.

How many energy sublevels are in the second principal energy level?

Pitanje 33
33.

Give the electron dot diagram for the element Iodine.

Pitanje 34
34.

Give the electron configuration for a neutral atom of beryllium.

Pitanje 35
35.

What is another name for the representative elements?

Pitanje 36
36.

Which of the following elements is in the same period as phosphorus?

Pitanje 37
37.

Of the elements Pt, V, Li, and Kr, which is a nonmetal?

Pitanje 38
38.

Which of the following elements has the smallest atomic radius?

Pitanje 39
39.

Which group of elements in the periodic table is known as the alkali metals ?

Pitanje 40
40.

What is another name for column 17 elements?

Pitanje 41
41.

Who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?

Pitanje 42
42.

What is the element with the highest electronegativity value?

Pitanje 43
43.

EXTRA CREDIT: __________________ is the most abundant state of matter found in the universe.

Pitanje 44
44.

Essay--Write the answer to one essay question in the space provided below.

FCA’s 1. Write in complete sentences and paragraph form.

2. Use Chapter 3 terminology to answer questions(example: substance, element, compound, solution, etc...).

3. Provide inferences, other thoughts, or personal experiences in your answer whenever possible.

Essay Questions to choose from....

Choice #1 Give an example of a physical or chemical change and explain what makes it only a physical or chemical change.

Choice #2 Explain why the atomic radius of an element changes as you go left to right on the periodic table and how the atomic radius changes as you go top to bottom on the periodic table.

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