Measurement, Mass & Equations (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards
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Why does mass seem to change in some reactions?
Why does mass seem to change in some reactions?
Gases can escape or enter container
Is mass conserved in reactions?
Is mass conserved in reactions?
Yes, always
What happens when is heated?
What happens when is heated?
Decomposes to CaO and
Why does appear to lose mass when heated?
Why does appear to lose mass when heated?
escapes in open container
Products of decomposition
Products of decomposition
CaO and
What Fe reacts with to form rust
What Fe reacts with to form rust
from air
Why does iron appear to gain mass when rusting?
Why does iron appear to gain mass when rusting?
from air combines with it
Common name for iron oxide
Common name for iron oxide
Rust
Product of Fe + reaction
Product of Fe + reaction
Iron oxide (rust)
Example of apparent mass loss
Example of apparent mass loss
Heating in open container
Example of apparent mass gain
Example of apparent mass gain
Iron rusting in air