Lesson 1

Question 1

2 kinds of matter

Answer 1

mixtures, pure substances

Question 2

2 kinds of mixtures

Answer 2

mechanical, solutions

Question 3

2 kinds of pure substances

Answer 3

elements, compounds

Question 4

element

Answer 4

a pure substance that cannot be further broken down through chemical methods

Question 5

compound

Answer 5

a pure substance that can be further broken down into simpler parts

Question 6

physical properties

Answer 6

a characteristic of a substance that can be observed/measured without changing the identity of the substance

Question 7

qualitative physical properties

Answer 7

can be observed and described without measurement

(“COSTLOM”) colour, odour, state, texture, luster, opacity, malleability

Question 8

quantitative physical properties

Answer 8

can be measured and assigned a value

(VMSHCD) viscosity, melting and boiling point, solubility hardness, conductivity, density

Question 9

chemical properties

Answer 9

the ability of a substance to react and form one or more new substances (RCST) reactivity, conbustability, stability, toxicity)

Question 10

atomic #

Answer 10

= # protons

Question 11

mass #

Answer 11

= protons + neutrons

Question 12

neutron #

Answer 12

= mass # - protons

Question 13

protons

Answer 13

= # electrons

Question 14

4 main periodic table groups

Answer 14

alkali metals, alkaline earth metals, halogens, noble gases

Question 15

ionic bonds

Answer 15

formed between metals and non-metals by the transferring of electrons, metals lose electrons (cations), non-metals loose electrons (anions)

Question 16

covalent bonds

Answer 16

atoms share valent electrons and become balanced (formed with 2+ non-metals)