Need help with some chemistry questions (1 Viewer)

[lazyandcool]

1. Which of the following groups contains pure substances only?
A) plastic, rubber, glass
B) cement, paper, brass
C) sugar, steam, salt
D)coal, butter, milk

2. Which of the following is true for compounds and not true for elements?
A) Compounds can chemically combine with other substances
B) Compounds can be decomposed
C) Compounds are not very reactive
D) Compounds are pure substances

help me please+ thanks very much =)

 

[spakfilla]

1. Which of the following groups contains pure substances only?
A) plastic, rubber, glass
B) cement, paper, brass
C) sugar, steam, salt
D)coal, butter, milk



2. Which of the following is true for compounds and not true for elements?
A) Compounds can chemically combine with other substances
B) Compounds can be decomposed
C) Compounds are not very reactive
D) Compounds are pure substances

 

[mirakon]

1. Which of the following groups contains pure substances only?
A) plastic, rubber, glass
B) cement, paper, brass
C) sugar, steam, salt
D)coal, butter, milk

2. Which of the following is true for compounds and not true for elements?
A) Compounds can chemically combine with other substances
B) Compounds can be decomposed
C) Compounds are not very reactive
D) Compounds are pure substances

help me please+ thanks very much =)

I think 1 is c
and 2 is b

 

[muzeikchun852]

1. Which of the following groups contains pure substances only?
A) plastic, rubber, glass
b) cement, paper, brass
c) sugar, steam, salt
d)coal, butter, milk

2. Which of the following is true for compounds and not true for elements?
A) compounds can chemically combine with other substances
b) compounds can be decomposed
c) compounds are not very reactive
d) compounds are pure substances

1. C
2. B

 

[ohexploitable]

Same as everyone above.

 

[mioumiou]

1. Which of the following groups contains pure substances only?
A) plastic, rubber, glass
B) cement, paper, brass
C) sugar, steam, salt
D)coal, butter, milk

2. Which of the following is true for compounds and not true for elements?
A) Compounds can chemically combine with other substances
B) Compounds can be decomposed
C) Compounds are not very reactive
D) Compounds are pure substances

help me please+ thanks very much =)

1. C
2. B
(I think....)

 

[iRuler]

eh may as well
1c
2b

 

[Amogh]

^Pretty sure all of them are right

 

[Julie Y]

pure substances are made of one type of substance/atom

C
B
bro