chapter1

Question 1

Atom

Answer 1

the smallest piece of an element that can still be recognised as that element.

Question 2

Molecule

Answer 2

two or more atoms covalently bonded together. Molecule contains a certain fixed number of atoms.

Question 3

element

Answer 3

all atoms in a element have same atomic number (made of only 1 type of atom)

Question 4

Compound

Answer 4

formed when two or more different elements chemically combine in fixed proportions.

Question 5

Pure

Answer 5

Made from only one element or one compound

Question 6

Iscotopes

Answer 6

are atoms of the same element with the same number of protons and different number of neutrons

Question 7

Solute

Answer 7

The substance that dissolves

Question 8

Solvent

Answer 8

The substance the solute dissolves in .

Question 9

Solution

Answer 9

The mixture formed when a solute dissolves in the solvent

Question 10

Saturated solution

Answer 10

A solution in which no more solute can dissolve at a specific temperature.

Question 11

soluble

Answer 11

Able to dissolve in solvent

Question 12

Insoluble

Answer 12

insoluble substance is a solid that will not dissolve in a solvent even after mixing

Question 13

Suspension

Answer 13

Heterogeneous mixture

Question 14

Heterogeneous mixture

Answer 14

mixture that has a non-uniform composition

Question 15

Residue

Answer 15

the solid left behind after filtration.

Question 16

Filtrate

Answer 16

the the liquid which passes through the filter paper