Science Review Nov 23rd Test

Question 1

What is a state of matter

Answer 1

Refers to the 3 basic forms that matter can take- Solid, liquid and gas

Question 2

Condensation

Answer 2

Change of state from a gas to a liquid

Question 3

Sublimation

Answer 3

Change of state from a solid to a gas or from a gas to a solid

Question 4

Deposition

Answer 4

Change of state from a gas to a solid

Question 5

Malleability

Answer 5

Term used to describe a substance that may be rolled or pressed into sheets

Question 6

Ductility

Answer 6

Solids definition that can be stretched into a lengthy wire

Question 7

Conductivity

Answer 7

Substances capacity to transmit electricity or to heal

Question 8

Solubility

Answer 8

Mass of a substance that can dissolve in a given amount of solvent to form a saturated solution at a given temperature

Question 9

Compound

Answer 9

Chemical combination of two or more elements

Question 10

Mixture

Answer 10

Combination of pure substances

Question 11

Solution

Answer 11

Mixture of two or more substances which makes it look like one

Question 12

Aqueous solution

Answer 12

Solution where water is the solvent

Question 13

Colloid

Answer 13

Cloudy mixture in which tiny particles of one substance are trapped in another and cannot be separated

Question 14

Metals

Answer 14

Conductor of electricity that is shiny, malleable and ductile

Question 15

Non metals

Answer 15

Dull, brittle element that cannot conduct electricity

Question 16

Metalloids

Answer 16

A métal with both metallic and non metallic properties

Question 17

Alkali metals

Answer 17

Group 1 elements in the periodic table, most reactive of the metals

Question 18

Alkaline earth metals

Answer 18

Group 2 elements in the periodic table, reactivity is not as strong as the alkali

Question 19

Halogens

Answer 19

Group 17 elements, most reactive non metals

Question 20

Noble gasses

Answer 20

Group 18 elements, Most stable and unreactive elements

Question 21

Ion

Answer 21

An atom that is now electrically charged because of electron loss or gain

Question 22

Polyatomic ions

Answer 22

Group of atoms acting as one

Question 23

Corrosion

Answer 23

When airborne oxygen interacts with a metal

Question 24

Catalyst

Answer 24

Substance that helps a chemical reaction to proceed more quickly

Question 25

Democritus

Answer 25

Developed the word atomos. Meaning smallest particles that couldn’t be broken down any further

Question 26

Dalton

Answer 26

Suggested elements were composed of atoms

Question 27

Thomson

Answer 27

Discovered electrons. Developed raison bun model of matter

Question 28

Nagoaka

Answer 28

Modeled matter after the solar system

Question 29

Rutherford

Answer 29

Found evidence of central nucleus named central core

Question 30

Bohr

Answer 30

Working with Rutherford, found electrons orbit is specific shells

Question 31

Chadwick

Answer 31

Discovered neutrons

Question 32

Mendeleev

Answer 32

Found the patterns of the periodic table. Organized the periodic table

Question 33

What is the number at the top right of a element

Answer 33

Ion charge

Question 34

Atomic number = ?

Answer 34

Protons

Question 35

Protons= ?

Answer 35

Electrons

Question 36

Atomic mass = ?

Answer 36

Neutrons + Protons (-)

Question 37

Indicators of chemical change

Answer 37

Change in colour Change in odour Change in temperature Change of state Formation of gas

Question 38

Element

Answer 38

An element is a substance that cannot be broken down into a simpler format

Question 39

Order of scientist (oldest to newest)

Answer 39

DDTNRBC Don’t don’t trust ni@@as real bih caution Democritus, dalton, Thomson, nagoaka, Rutherford, Bohr, Chadwick

Question 40

Ionic compound

Answer 40

Chemical compound composed of ions held together by electrostatic forces termed ionic bonding Ionic compound is the non metals + metals

Question 41

Molecular compound

Answer 41

Métal + métal

Question 42

Exothermic reaction

Answer 42

Chemical reaction that releases energy

Question 43

Endothermic reaction

Answer 43

Chemical reaction that absorbs energy

Question 44

Closed system

Answer 44

Ex cup of tea with lid on it

Question 45

Open system

Answer 45

Experiment allowing the release of one or more chemical reaction products Ex human body

Question 46

Molecular compounds use ____ for naming numbers of atoms

Answer 46

Prefix’s ex mono, di, tri

Question 47

Ionic compound use____ to name numbers

Answer 47

Roman numerals