science study topic 1

Question 1

what are elements

Answer 1

pure substances made up of only one kind of atom.

Question 2

what is a compound

Answer 2

substances formed when two or more different types of atoms bond together chemically

Question 2

what is an example of an element

Answer 2

oxygen

Question 3

what is an example of a mixture

Answer 3

a salad

Question 4

what is an example of a compound

Answer 4

water

Question 5

what is a mixture

Answer 5

combinations or two or more substances that are not chemically bonded, so they keep their individual properties. (they are not bonded)

Question 6

what is an atom

Answer 6

the basic building block of all matter. everything around us like plants, animals and even air.

Question 7

what is the structure of an atom

Answer 7

protons.
neutrons.
electrons.

Question 8

what charge is a proton

Answer 8

positive charge (+) , about 1 atomic mass unit

Question 9

what is an electrons charge

Answer 9

negatively charged (-) , about 1/1836 atomic mass units

Question 10

what charge is a neutron

Answer 10

no charge at all

Question 11

where are electrons located

Answer 11

on the nucleus shells

Question 12

where abouts are the protons and neutrons located

Answer 12

located in the nucleus

Question 13

what does the term mass number mean

Answer 13

the number of protons and neutrons in the nucleus.

Question 14

what is the term atomic number mean

Answer 14

number of protons in the nucleus

Question 15

what does the term matter mean

Answer 15

anything that has mass and takes up space. it can exist in different states including solids, liquids and gasses

Question 16

what does volume mean

Answer 16

amount of space an object occupies

Question 17

what does mass mean

Answer 17

amount of matter in an object (what typically makes up its weight)