Which of the following properties is a chemical property?(1 point)
Responses
magnetism
magnetism
flammability
flammability
hardness
hardness
melting point
9 answers
melting point
Which of the following substances is a compound?(1 point)
Responses
oxygen (O)
oxygen (O)
carbon (C)
carbon (C)
water (H2
O)
water (H2O)
gold (Au)
Responses
oxygen (O)
oxygen (O)
carbon (C)
carbon (C)
water (H2
O)
water (H2O)
gold (Au)
water (H2O)
Which of the following substances is an element?(1 point)
Responses
protein
protein
salt
salt
insulin
insulin
hydrogen
Responses
protein
protein
salt
salt
insulin
insulin
hydrogen
hydrogen
Which of these properties is a chemical property?(1 point)
Responses
melting point
melting point
flammability
flammability
hardness
hardness
magnetism
Responses
melting point
melting point
flammability
flammability
hardness
hardness
magnetism
flammability
The chemical formula for methane is CH 4
. What is the fixed ratio of carbon (C) to hydrogen (H)?(1 point)
Responses
1:1
1:1
1:4
1:4
4:5
4:5
1:5
. What is the fixed ratio of carbon (C) to hydrogen (H)?(1 point)
Responses
1:1
1:1
1:4
1:4
4:5
4:5
1:5
1:4