science summative Flashcards
molecular
- weak forces of attraction between molecules
- covalent
- soft, any state of matter at room temp
- odours
- low melting point
- not dissolvable
- no electrolyte
ionic
- strong force of attraction between opposite ions
- ionic
- hard, solid at room temp
- no odours
- high melting point
- dissolvable
- contain electrolyte
law of conservation of mass
total mass of reactants = total mass of products
acid indicator
- phenolphthalein = white
- bromthymol blue = yellow
- methyl orange = red
base indicator
- phenolphthalein = pink
- bromthymol blue = blue
- methyl orange = yellow
interphase
- cells grow
- copies genetic materials and organelles
prophase
- nuclear membrane dissolved
- DNA shortens, thickens, forms double stranded chromosomes
metaphase
chromosomes line up in middle of cell
anaphase
- chromosomes separate into 2 identical copies
- moves to opposite ends
telophase
- chromosomes reach ends of cell and lengthen
- new nuclear membrane forms
cytokinesis
cytoplasm and organelles separate
diffusion
the spreading of substance by the natural movement of their particles
law of reflection in plane mirror
- angle of incidence = angle of reflection
- the incident ray, reflected ray and normal ray are all in the same plane
speculation reflection
reflection of light off a smooth surface
diffuse reflection
reflection of light off a full or irregular surface
total internal reflection
when light moves from a more dense to less dense media, it bends away from the normal
critical angle
when angle of incidence is increased, causing angle of refraction to increase, eventually becoming 90 degrees
refraction
the bending of light
CONCAVE
beyond c
- smaller
- inverted
- between c and f
- real
CONCAVE
at c
- same
- inverted
- at c
- real
CONCAVE
between c and f
- larger
- inverted
- beyond c
- real
CONCAVE
at f
no clear image
CONCAVE
between mirror and f
- larger
- upright
- behind mirror
- virtual
convex mirror
- smaller
- upright
- behind mirror
- virtual
BICONVEX
beyond 2f’
- smaller
- inverted
- between f and 2f
- real
BICONVEX
at 2f’
- same
- inverted
- at 2f
- real
BICONVEX
between 2f’ and f’
- larger
- inverted
- beyond 2f
- real
BICONVEX
at f’
no clear image
BICONVEX
between lens and f’
- larger
- upright
- in front of lens
- virtual
