Chemistry Midterm Review

Question 1

What is the volume of the liquid?

Accepted Answer

24 units3

Question 2

What is 10oC in Kelvins?

Accepted Answer

283 K.

Question 3

What are chemical properties?

Accepted Answer

Properties that can lead to a change in the identity.

Question 4

How many moles of silicon in 80 grams?

Accepted Answer

2.847 mols.

Question 5

How many electrons can a f subshell carry?

Accepted Answer

14 electrons.

Question 6

What are physical properties?

Accepted Answer

Any features that can be observed without changing its iden.

Question 7

How many neutrons are in Carbon-18?

Accepted Answer

12 neutrons.

Question 8

What's the difference between pure substances and mixtures?

Accepted Answer

Mixtures can be separated by physical means; p.s can not.

Question 9

BIOLOGY BONUS! What is the monomer for a carbohydrate molecule?

Accepted Answer

Monosaccharides.

Question 10

If a piece of metal weighs 80 grams and has a volume of 20 ml. What's the density of the metal?

Accepted Answer

D= 4 g/ml

Question 11

What is the difference between homogenous and heterogeneous mixtures?

Accepted Answer

Homogenous mixtures have the same properties throughout., Heterogeneous mixtures have different properties throughout.

Question 12

What is 9,600 in scientific notation?

Accepted Answer

9.6 × 103

Question 13

What is density?

Accepted Answer

It's the measure of the amount of mass within a unit volume.

Question 14

What is John Dalton known for?

Accepted Answer

Atomic Theory of Matter.

Question 15

Which of the following is a chemical property?

Accepted Answer

A substance's reaction with acid.

Question 16

How many electrons does Ka-8 have?

Accepted Answer

27 electrons.

Question 17

What is the electronegativity difference between Sodium and Chlorine?

Accepted Answer

2.1

Question 18

What elements form covalent bonds?

Accepted Answer

Nonmetal & nonmetal.

Question 19

What is the definition of matter?

Accepted Answer

Anything that consists of mass and takes up space.

Question 20

What element has an atomic number of 50?

Accepted Answer

Tin.

Question 21

What bond forms HCl?

Accepted Answer

Covalent.

Question 22

How many electron can a p subshell carry?

Accepted Answer

6 electrons.

Question 23

Free Point!

Accepted Answer

Free point!, Free point!

Question 24

How many grams are in 5 moles of Argon?

Accepted Answer

184.7 grams.

Question 25

What are isotopes of element?

Accepted Answer

Atoms of the same element but differ in the # of neutrons.

Question 26

What is the molar mass of CO2?

Accepted Answer

42.01 g/mol

Question 27

What was J.J. Thomson known for?

Accepted Answer

The dicovery of the electron.

Question 28

What element has 20 protons?

Accepted Answer

Calcium.

Question 29

What is the change of state from a liquid to a solid?

Accepted Answer

Freezing.

Question 30

What is the formula for density?

Accepted Answer

D= M / V

Question 31

Where are protons located in the atom?

Accepted Answer

Nucleus.

Question 32

What are valence electrons?

Accepted Answer

Electrons found in the outmost shell., Electrons that determine the atom's properties.

Question 33

1s2, 2s2, 2p6, 3s2, 3p6, 4s2...

Accepted Answer

3d10.

Question 34

What type of matter does this particle diagram show?

Accepted Answer

Element.

Question 35

Free Point!

Accepted Answer

Free point., Free point.

Question 36

What is Chemistry?

Accepted Answer

The study of matter and its properties.

Question 37

What is the change of state from a solid to a gas?

Accepted Answer

Sublimation.

Question 38

What elements form ionic bonds?

Accepted Answer

Metals and nonmetals.

Question 39

What state of matter has the lowest entropy?

Accepted Answer

Solid.

Question 40

Nonpolar bonds...

Accepted Answer

have an even sharing of electrons.

Question 41

What are polar bonds?

Accepted Answer

Bonds that has an electronegativity difference of 0.4 - 1.6.

Question 42

How does an atom become an ion?

Accepted Answer

When an atom loses or gain electrons.

Question 43

How many neutrons does Argon-40 have?

Accepted Answer

22.

Question 44

Which of the following is a physical property?

Accepted Answer

Mass., Color.

Question 45

What are the three particles in an atom?

Accepted Answer

Protons, neutrons, and electrons.

Question 46

What is the charge of an electron?

Accepted Answer

-1

Question 47

Are alloys homogenous or heterogeneous mixtures?

Accepted Answer

Homogenous mixtures.

Question 48

What is 0.00062 in scientific notation?

Accepted Answer

6.2 × 10-4

Question 49

List the states of matter in decreasing entropy.

Accepted Answer

Gas, plasma, liquid, solid.

Question 50

What bond forms CO2?

Accepted Answer

Covalent.

Chemistry Midterm Review

Questions 50

Chemistry Midterm Review

Questions 50