Terms

Question 1

examples of acids

Answer 1

citric acid, nitric acid, hydrochloric acid, sulfuric acid

Question 2

examples of acids in everyday life

Answer 2

lemons, vinegar, urine

Question 3

examples of bases in everyday life

Answer 3

soap, toothpaste, bleach,

Question 4

what type of ions do acids contain?

Answer 4

H+

Question 5

What does a plant cell have that animal cells don’t? (3 things)

Answer 5

vacuole, cell wall, chloroplasts

Question 6

function of cell wall

Answer 6

to keep a rigid structure and support the cell

Question 7

function of cell membrane

Answer 7

controls what moves in and out of the cell

Question 8

function of cytoplasm

Answer 8

jelly-like substance where most chemical reactions happen

Question 9

function of nucleus

Answer 9

where genetic information is kept and controls what happens in the cell

Question 10

function of mitochondria

Answer 10

where respiration takes place, and energy is released

Question 11

function of chloroplasts

Answer 11

contains a green pigment (chlorophyll), and is where photosynthesis takes place)

Question 12

function of vacuole

Answer 12

contains a liquid cell sap which keeps the cell firm

Question 13

tissue

Answer 13

group of cells working together to perform a task

Question 14

organ

Answer 14

group of tissues working together to perform a task

Question 15

organ system

Answer 15

group of organs working together to perform a task

Question 16

organism

Answer 16

group of cells working together to perform a task

Question 17

when exhaling, the thorax volume…

Answer 17

decreases

Question 18

when inhaling, the thorax volume…

Answer 18

increases

Question 19

when exhaling, the thorax pressure…

Answer 19

increases

Question 20

when inhaling, the thorax pressure…

Answer 20

decreases

Question 21

goitre is caused by…

Answer 21

iodine deficiency

Question 22

scurvy is caused by..

Answer 22

lack of vitamin c

Question 23

rickets is caused by…

Answer 23

lack of vitamin d

Question 24

anemia is cause by…

Answer 24

lack of iron

Question 25

similarities between solids, liquids and gases

Answer 25

• solids and liquids have fixed volumes and cannot be compressed.
• liquids and gases aren’t rigid and have no fixed shape.

Question 26

properties of metals

Answer 26

high melting and boiling points, good conductors of heat and electricity, high density, malleable, ductile, shiny

Question 27

properties of non-metals

Answer 27

low melting and boiling points, poor conductors of heat and electricity, not malleable, not ductile, dull

Question 28

hooke’s law

Answer 28

The extension of a spring is directly proportional to the force applied

Question 29

how was the solar system formed?

Answer 29

• 4.6 billion years ago a nebula collapsed under its own gravity.
• As it did, it became denser and began to spin more rapidly.
• This led to nuclear fusion between the debris which formed planets.

Question 30

what are seasons and why do we experience them?

Answer 30

The Earth’s axis is tilted 23.4 degrees from vertical, meaning that as it orbits the sun, the northern hemisphere is either tilted towards the sun (summer) or away from the sun (winter). Wen it is summer in the northern hemisphere, it is winter in the southern hemisphere.

Question 31

repeatability

Answer 31

the same person using the same method

Question 32

reproducibility

Answer 32

a different person using a different method