chemistry

Question 1

Matter

Answer 1

anything that has a mass or takes up space

Question 2

qualitative physical property

Answer 2

substance that is not measured and has no numerical value ex colour odour texture

Question 3

quantitative physical property

Answer 3

substance that is measured and does have numerical value. ex temp height mass

Question 4

physical change

Answer 4

change in property’s such as texture shape or state. the change is reversible

Question 5

chemical change

Answer 5

change of substance into another. one or more substances can be created. not reversible

Question 6

evidence of chemical change

Answer 6

colour change, precipitate, gas, odour, temp change

Question 7

parts of atom

Answer 7

protons, neutrons, electrons

Question 8

elements

Answer 8

particles in their simplest/smallest form. ex silver, gold.

Question 9

compounds

Answer 9

made up of two or more elements. ex co2 h20

Question 10

mechanical mixture

Answer 10

when you can see the different kinds of particles. ex lemonade with pulp, salad.

Question 11

solution

Answer 11

when you cannot see the different kinds of particles. ex milk

Question 12

atomic number

Answer 12

number of protons in an atom (top left)

Question 13

atomic mass

Answer 13

mass listed on periodic table

Question 14

families on periodic table

Answer 14

1- alkali metals 2-alkaline earth metals 17-halogens 18-noble gases

Question 15

ionic compound

Answer 15

metal and non metal. ionic bond. trade the electrons

Question 16

molecular compound

Answer 16

only non metals. covalent bond. share the electrons.