term 1

Question 1

name the three states of matter

Answer 1

solid, liquid, gas gas liquid soild

Question 2

Define matter

Answer 2

Anything that takes up space Air, water, rocks, and even people are examples of matter

Question 3

simply explain why science looks like magic but isn’t

Answer 3

This happens because of chemical reactions, which are processes that rearrange atoms in substances to form new ones

Question 4

what is an atom?

Answer 4

the smallest building blocks of matter and make up everything around us

Question 5

describe the structure of an atom (protons ,neutrons, electrons)

Answer 5

Protons and neutrons are in the center of the atom, making up the nucleus. Electrons surround the nucleus. Protons have a positive charge.

Question 6

define what a subatomic particle is

Answer 6

a particle which is smaller than an atom in size

Question 7

define an element

Answer 7

a substance that is made up of only one kind of atom

Question 8

how does technology increase our understanding of the atom

Answer 8

Advanced tools based on x-ray, electron, neutron beams and ions

Question 9

explain what the periodic table is and why its important

Answer 9

a system for arranging the chemical elements

Question 10

describe how the period table is aorganised

Answer 10

arranges the elements in rows and columns

Question 11

name and identify some elements on the periodic table

Answer 11

H - Hydrogen,He - Helium, Be - Beryllium, B - Boron

Question 12

identify properties of metals

Answer 12

lustrous, malleable, ductile, good conductors of heat and electricity

Question 13

identify properties of nonmetals

Answer 13

In the elemental form, non-metals can be gas, liquid or solid

Question 14

identify propeties of semimetals

Answer 14

lower electrical and thermal conductivities