Question

1.Which is a chemical change? *
A drink mix dissolves in water
Bubbles of a gas explode when ignited
Rubbing alcohol evaporates quickly
A can is crushed by a hammer

2.All of the following are chemical changes except *

Milk going sour
Railroad tracks rusting
Wood burning
Sugar dissolving in water

3.Corrosion of a metal is which type of change *
Chemical
Physical
4.Which type of substance is chlorine? *
Element
Compound
Solid
Solution
5.Which is NOT one of the parts of an atom? *
Electron
Neutron
Proton
Isotope
6.Which sub-atomic particle is negatively charged? *
Neutron
Electron
Proton
7.Which sub-atomic particle is positively charged? *
Neutron
Proton
Electron
8.Which type of matter is liquid water? *
Element
Compound
Solid
Solution
9.Which of these is used to identify an element? *
A formula
A subscript
An equation
A symbol
10.How many atoms of oxygen are in H2SO4? *
2
1
4
6
11.The modern periodic table orders elements by *
Atomic mass
Atomic number
Boiling point
Melting point

12.Vertical columns on the periodic table are called *
Periods
Series
Groups
Rows
13.The reactive non-metals are found on which side of the periodic table? *
Left
Right
Top
Bottom
14.The most reactive metals are found on which side of the periodic table? *
Left
Right
Top
Bottom
15.Where are the transition metals located on the periodic table? *
Left
Middle
Right
Option 4
16.The noble gases are in *
A group
A row
A period
A series
17.How many potassium atoms are in K2S? *
1
2
3
4
18.Which element should has similar reactivity to oxygen *
Ne
S
N
F
19.Which element is not an alkali metal? *
Mg
K
Na
Rb
20.Which element is not a transition metal? *
Cu
Fe
Ag
Ba
21.What is the correct symbol for tin? *
Ti
Tn
Sn
Su
22.What is the correct name for the symbol W? *
Water
Tungsten
Gold
Ytterium
23.Which of the following is not a noble gas? *
Ne
Xe
Ar
As
24.Which element would be reactively similar to Ca? *
K
Au
Fe
Sr
25.Horizontal rows on the periodic table are called *
Groups
Periods
Series
Families
26.Which symbol is for a nonmetal? *
P
K
Li
Ca
27.Which of these is the name of an alkali earth metal? *
Sodium
Lithium
Calcium
Potassium
28.If the boiling point of HCl is -85 (C) and the boiling point of HI is -36 (C), what would be a good estimate for the boiling point of HBr? *
1 point
-61
-32
-8
-119
29.If the formula for potassium oxide is K20, what should the formula for sodium oxide be?
NaO
NaO2
Na2O
NaO3
30.If you added a proton to a nucleus, you would change *
The element but not the mass
The element and the mass
The mass but not the element
Neither the mass nor the element

31.If you added an electron to an element, you would change
1 point
The mass
The charge
The element
The stability of the nucleus

please give all the answer please correct one please in English not indian please.
please answer it asap please

Answer 1

Answer:

QUESTION

3 ANS - CHEMICAL CHANGE

4 ANS - ELEMENT

5 ANS - ISOTOPE

6 ANS - ELECTRON

7 ANS - PROTON

8 ANS - COMPOUND

9 ANS - SYMBOL

10 ANS - 4