Question 1

Observable or measurable properties without changing the composition of matter.

Accepted Answer

Physical Property

Answer

Chemical Property

Answer

Physical Change

Answer

Extensive Property

Answer

Qualitative Property

Question 2

Which of the following is an example of an intensive property?

Accepted Answer

Concentration

Answer

Size

Answer

Volume

Answer

Entropy

Answer

Heat Capacity

Question 3

Which of the following is not an example of a chemical change?

Accepted Answer

Dry Ice Sublimes

Answer

Fireworks exploding

Answer

Photosynthesis

Answer

Cooking an egg

Answer

Metabolism

Question 4

Which of the following statements are true?

Accepted Answer

All compounds consist of a fixed ratio of elements

Answer

Mixtures are divided into solutions and compounds

Answer

An element is a mixture that cannot be broken down into a new substance by using some physical or chemical means.

Answer

The atoms in compounds are regrouped to make new and different compounds in physical change

Answer

Pure substances are substances that are composed of two or more types of particles and has a continual structure.

Question 5

Which of the following is a homogeneous mixture?

Accepted Answer

Air

Answer

Water

Answer

Diamond

Answer

Steam

Answer

Hydrochloric Acid

Question 6

A purification process where the components of a liquid mixture are vaporized and then condensed and isolated.

Accepted Answer

Distillation

Answer

Filtration

Answer

Centrifugation

Answer

Decantation

Answer

Evaporation

Question 7

Refers to the liquid that we get after passing through the filter paper

Accepted Answer

Filtrate

Answer

Residue

Answer

Funnel

Answer

Condensate

Answer

Distillate

Question 8

The phenomenon of water being able to rise up a narrow tube is called

Accepted Answer

Capillary action

Answer

Enthalpy

Answer

Chromatography

Answer

Entropy

Answer

Decantation

Question 9

Which of the following statements are false?

Accepted Answer

Electrons are small but contribute a lot in an element’s overall atomic mass due to its number in the electron shell

Answer

The number of protons determines the identity of an atom or element in each sample of a substance

Answer

The outermost regions of the atom are called electron shells and contain the electrons

Answer

Protons and neutrons have approximately the same mass, about 1 amu.

Answer

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge).

Question 10

An unknown substance has 15 protons. What is the substance?

Accepted Answer

Phosphorus

Answer

Sulfur

Answer

Neon

Answer

Argon

Answer

Fluorine

Question 11

Approximately what is the atomic mass of Iron?

Accepted Answer

56

Answer

52

Answer

35

Answer

70

Answer

48

Question 12

Protium, deuterium, and tritium are isotopes of hydrogen. What is the difference between these 3 isotopes?

Accepted Answer

The number of neutrons found inside its nucleus.

Answer

The number of protons found inside its nucleus.

Answer

The number of protons and neutrons found inside its nucleus.

Answer

The number of electrons found in its valence shell

Answer

The number of electrons found inside its nucleus.

Question 13

How many neutrons are there in Carbon-14?

Accepted Answer

8

Answer

6

Answer

12

Answer

20

Answer

14

Question 14

Which of the following is a radioactive isotope?

Accepted Answer

Tritium (Hydrogen-3)

Answer

Deuterium (Hydrogen-2)

Answer

Carbon-12

Answer

Sulfur-32

Answer

Nitrogen-15

Question 15

An isotope used to kill microorganisms in food and extend the shelf life of this products and to collect evidence for or against a claimed wine vintage.

Accepted Answer

Cesium – 137

Answer

Hydrogen- 3

Answer

Cobalt -60

Answer

Carbon-12

Answer

Californium- 252

Question 16

Accepted Answer

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